diff --git a/apps/antalmanac/src/components/Calendar/CalendarRoot.tsx b/apps/antalmanac/src/components/Calendar/CalendarRoot.tsx
index 5a97c28e9..50fa01b76 100644
--- a/apps/antalmanac/src/components/Calendar/CalendarRoot.tsx
+++ b/apps/antalmanac/src/components/Calendar/CalendarRoot.tsx
@@ -11,6 +11,7 @@ import CourseCalendarEvent, { CalendarEvent } from './CourseCalendarEvent';
 import AppStore from '$stores/AppStore';
 import locationIds from '$lib/location_ids';
 import { useTimeFormatStore } from '$stores/SettingsStore';
+import { useHoveredStore } from '$stores/HoveredStore';
 
 const localizer = momentLocalizer(moment);
 
@@ -78,9 +79,14 @@ export default function ScheduleCalendar(props: ScheduleCalendarProps) {
     const [scheduleNames, setScheduleNames] = useState(AppStore.getScheduleNames());
 
     const { isMilitaryTime } = useTimeFormatStore();
+    const { hoveredCourseEvents } = useHoveredStore();
 
     const getEventsForCalendar = () => {
-        return showFinalsSchedule ? finalsEventsInCalendar : eventsInCalendar;
+        return showFinalsSchedule
+            ? finalsEventsInCalendar
+            : hoveredCourseEvents
+              ? [...eventsInCalendar, ...hoveredCourseEvents]
+              : eventsInCalendar;
     };
 
     const handleClosePopover = () => {
@@ -129,7 +135,9 @@ export default function ScheduleCalendar(props: ScheduleCalendarProps) {
         // This equation is taken from w3c, does not use the colour difference part
         const minBrightnessDiff = 125;
 
-        const backgroundRegexResult = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(bg) as RegExpExecArray; // returns {hex, r, g, b}
+        const backgroundRegexResult = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(
+            bg.slice(0, 7)
+        ) as RegExpExecArray; // returns {hex, r, g, b}
         const backgroundRGB = {
             r: parseInt(backgroundRegexResult[1], 16),
             g: parseInt(backgroundRegexResult[2], 16),
diff --git a/apps/antalmanac/src/components/Header/SettingsMenu.tsx b/apps/antalmanac/src/components/Header/SettingsMenu.tsx
index f4b72b6f9..d35dfae06 100644
--- a/apps/antalmanac/src/components/Header/SettingsMenu.tsx
+++ b/apps/antalmanac/src/components/Header/SettingsMenu.tsx
@@ -1,9 +1,10 @@
 import { useCallback, useState } from 'react';
-import { Box, Button, ButtonGroup, Divider, Drawer, IconButton, Typography, useMediaQuery } from '@material-ui/core';
+import { Box, Button, ButtonGroup, Drawer, IconButton, Switch, Typography, useMediaQuery } from '@material-ui/core';
+import { Divider, Stack, Tooltip } from '@mui/material';
 import { CSSProperties } from '@material-ui/core/styles/withStyles';
-import { Close, DarkMode, LightMode, Settings, SettingsBrightness } from '@mui/icons-material';
+import { Close, DarkMode, Help, LightMode, Settings, SettingsBrightness } from '@mui/icons-material';
 
-import { useThemeStore, useTimeFormatStore } from '$stores/SettingsStore';
+import { usePreviewStore, useThemeStore, useTimeFormatStore } from '$stores/SettingsStore';
 
 const lightSelectedStyle: CSSProperties = {
     backgroundColor: '#F0F7FF',
@@ -33,7 +34,7 @@ function ThemeMenu() {
     };
 
     return (
-        <Box sx={{ padding: '1rem 1rem 0 1rem', width: '100%' }}>
+        <Box sx={{ padding: '0 1rem', width: '100%' }}>
             <Typography variant="h6" style={{ marginTop: '1.5rem', marginBottom: '1rem' }}>
                 Theme
             </Typography>
@@ -91,7 +92,7 @@ function TimeMenu() {
     };
 
     return (
-        <Box sx={{ padding: '1rem 1rem 0 1rem', width: '100%' }}>
+        <Box sx={{ padding: '0 1rem', width: '100%' }}>
             <Typography variant="h6" style={{ marginTop: '1.5rem', marginBottom: '1rem' }}>
                 Time
             </Typography>
@@ -135,6 +136,30 @@ function TimeMenu() {
     );
 }
 
+function ExperimentalMenu() {
+    const [previewMode, setPreviewMode] = usePreviewStore((store) => [store.previewMode, store.setPreviewMode]);
+
+    const handlePreviewChange = (event: React.ChangeEvent<HTMLInputElement>) => {
+        setPreviewMode(event.target.checked);
+    };
+
+    return (
+        <Stack sx={{ padding: '1rem 1rem 0 1rem', width: '100%', display: 'flex' }} alignItems="middle">
+            <Box display="flex" justifyContent="space-between" width={1}>
+                <Box display="flex" alignItems="center" style={{ gap: 4 }}>
+                    <Typography variant="h6" style={{ display: 'flex', alignItems: 'center', alignContent: 'center' }}>
+                        Hover to Preview
+                    </Typography>
+                    <Tooltip title={<Typography>Hover over courses to preview them in your calendar!</Typography>}>
+                        <Help />
+                    </Tooltip>
+                </Box>
+                <Switch color="primary" value={previewMode} checked={previewMode} onChange={handlePreviewChange} />
+            </Box>
+        </Stack>
+    );
+}
+
 function SettingsMenu() {
     const [drawerOpen, setDrawerOpen] = useState(false);
     const isMobileScreen = useMediaQuery('(max-width:750px)');
@@ -166,7 +191,7 @@ function SettingsMenu() {
                             flexDirection: 'row',
                             justifyContent: 'space-between',
                             alignItems: 'center',
-                            padding: '16px',
+                            padding: '12px',
                         }}
                     >
                         <Typography variant="h6">Settings</Typography>
@@ -174,10 +199,17 @@ function SettingsMenu() {
                             <Close fontSize="inherit" />
                         </IconButton>
                     </Box>
+
                     <Divider />
 
                     <ThemeMenu />
                     <TimeMenu />
+
+                    <Divider style={{ marginTop: '16px' }}>
+                        <Typography variant="subtitle2">Experimental Features</Typography>
+                    </Divider>
+
+                    <ExperimentalMenu />
                 </Box>
             </Drawer>
         </>
diff --git a/apps/antalmanac/src/components/RightPane/SectionTable/SectionTableBody.tsx b/apps/antalmanac/src/components/RightPane/SectionTable/SectionTableBody.tsx
index c2f23e89b..79cc5f140 100644
--- a/apps/antalmanac/src/components/RightPane/SectionTable/SectionTableBody.tsx
+++ b/apps/antalmanac/src/components/RightPane/SectionTable/SectionTableBody.tsx
@@ -33,7 +33,8 @@ import { useTabStore } from '$stores/TabStore';
 import locationIds from '$lib/location_ids';
 import { normalizeTime, parseDaysString, formatTimes } from '$stores/calendarizeHelpers';
 import useColumnStore, { type SectionTableColumn } from '$stores/ColumnStore';
-import { useTimeFormatStore } from '$stores/SettingsStore';
+import { usePreviewStore, useTimeFormatStore } from '$stores/SettingsStore';
+import { useHoveredStore } from '$stores/HoveredStore';
 
 const styles: Styles<Theme, object> = (theme) => ({
     sectionCode: {
@@ -148,12 +149,12 @@ type SectionType = 'Act' | 'Col' | 'Dis' | 'Fld' | 'Lab' | 'Lec' | 'Qiz' | 'Res'
 interface SectionDetailCellProps {
     classes: ClassNameMap;
     sectionType: SectionType;
-    sectionNum: string;
+    sectionNumber: string;
     units: number;
 }
 
 const SectionDetailsCell = withStyles(styles)((props: SectionDetailCellProps) => {
-    const { classes, sectionType, sectionNum, units } = props;
+    const { classes, sectionType, sectionNumber, units } = props;
     const isMobileScreen = useMediaQuery(`(max-width: ${MOBILE_BREAKPOINT})`);
 
     return (
@@ -161,7 +162,7 @@ const SectionDetailsCell = withStyles(styles)((props: SectionDetailCellProps) =>
             <Box className={classes[sectionType]}>{sectionType}</Box>
             <Box>
                 {!isMobileScreen && <>Sec: </>}
-                {sectionNum}
+                {sectionNumber}
             </Box>
             <Box>
                 {!isMobileScreen && <>Units: </>}
@@ -470,6 +471,7 @@ interface SectionTableBodyProps {
     scheduleNames: string[];
 }
 
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
 const tableBodyCells: Record<SectionTableColumn, React.ComponentType<any>> = {
     sectionCode: CourseCodeCell,
     sectionDetails: SectionDetailsCell,
@@ -482,9 +484,6 @@ const tableBodyCells: Record<SectionTableColumn, React.ComponentType<any>> = {
     status: StatusCell,
 };
 
-/**
- * TODO: SectionNum name parity -> SectionNumber
- */
 const SectionTableBody = withStyles(styles)((props: SectionTableBodyProps) => {
     const { classes, section, courseDetails, term, allowHighlight, scheduleNames } = props;
 
@@ -505,20 +504,36 @@ const SectionTableBody = withStyles(styles)((props: SectionTableBodyProps) => {
             daysOccurring: parseDaysString(section.meetings[0].days),
             ...normalizeTime(section.meetings[0]),
         };
-    }, [section.meetings[0]]);
+    }, [section.meetings]);
 
     // Stable references to event listeners will synchronize React state with the store.
 
     const updateHighlight = useCallback(() => {
         setAddedCourse(AppStore.getAddedSectionCodes().has(`${section.sectionCode} ${term}`));
-    }, []);
+    }, [section.sectionCode, term]);
 
     const updateCalendarEvents = useCallback(() => {
         setCalendarEvents(AppStore.getCourseEventsInCalendar());
     }, [setCalendarEvents]);
 
-    // Attach event listeners to the store.
+    const [hoveredCourseEvents, setHoveredCourseEvents] = useHoveredStore((store) => [
+        store.hoveredCourseEvents,
+        store.setHoveredCourseEvents,
+    ]);
+
+    const { previewMode } = usePreviewStore();
+
+    const handleHover = useCallback(() => {
+        const alreadyHovered =
+            hoveredCourseEvents &&
+            hoveredCourseEvents.some((courseEvent) => courseEvent.sectionCode == section.sectionCode);
 
+        !previewMode || alreadyHovered || addedCourse
+            ? setHoveredCourseEvents(undefined)
+            : setHoveredCourseEvents(section, courseDetails, term);
+    }, [addedCourse, courseDetails, hoveredCourseEvents, previewMode, section, setHoveredCourseEvents, term]);
+
+    // Attach event listeners to the store.
     useEffect(() => {
         AppStore.on('addedCoursesChange', updateHighlight);
         AppStore.on('currentScheduleIndexChange', updateHighlight);
@@ -592,6 +607,8 @@ const SectionTableBody = withStyles(styles)((props: SectionTableBodyProps) => {
                 // allowHighlight is ALWAYS false when in Added Course Pane and ALWAYS true when in CourseRenderPane
                 addedCourse ? { addedCourse: addedCourse && allowHighlight } : { scheduleConflict: scheduleConflict }
             )}
+            onMouseEnter={handleHover}
+            onMouseLeave={handleHover}
         >
             {!addedCourse ? (
                 <ScheduleAddCell
@@ -604,12 +621,10 @@ const SectionTableBody = withStyles(styles)((props: SectionTableBodyProps) => {
             ) : (
                 <ColorAndDelete color={section.color} sectionCode={section.sectionCode} term={term} />
             )}
-
             {Object.entries(tableBodyCells)
                 .filter(([column]) => activeColumns.includes(column as SectionTableColumn))
                 .map(([column, Component]) => {
                     return (
-                        // All of this is a little bulky, so if the props can be added specifically to activeTableBodyColumns, LMK!
                         <Component
                             key={column}
                             section={section}
diff --git a/apps/antalmanac/src/stores/HoveredStore.ts b/apps/antalmanac/src/stores/HoveredStore.ts
new file mode 100644
index 000000000..5245399ef
--- /dev/null
+++ b/apps/antalmanac/src/stores/HoveredStore.ts
@@ -0,0 +1,33 @@
+import { create } from 'zustand';
+import { AASection } from '@packages/antalmanac-types';
+import { calendarizeCourseEvents } from './calendarizeHelpers';
+import { CourseEvent } from '$components/Calendar/CourseCalendarEvent';
+import { CourseDetails } from '$lib/course_data.types';
+
+export interface HoveredStore {
+    hoveredCourseEvents: CourseEvent[] | undefined;
+    setHoveredCourseEvents: (section?: AASection, courseDetails?: CourseDetails, term?: string) => void;
+}
+
+export const useHoveredStore = create<HoveredStore>((set) => {
+    return {
+        hoveredCourseEvents: undefined,
+        setHoveredCourseEvents: (section, courseDetails, term) => {
+            set({
+                hoveredCourseEvents:
+                    section && courseDetails && term
+                        ? calendarizeCourseEvents([
+                              {
+                                  ...courseDetails,
+                                  section: {
+                                      ...section,
+                                      color: '#80808080',
+                                  },
+                                  term,
+                              },
+                          ])
+                        : undefined,
+            });
+        },
+    };
+});
diff --git a/apps/antalmanac/src/stores/SettingsStore.ts b/apps/antalmanac/src/stores/SettingsStore.ts
index 5ca0d6dd4..eab601688 100644
--- a/apps/antalmanac/src/stores/SettingsStore.ts
+++ b/apps/antalmanac/src/stores/SettingsStore.ts
@@ -20,8 +20,8 @@ export const useThemeStore = create<ThemeStore>((set) => {
         themeSetting !== 'system'
             ? themeSetting
             : window.matchMedia('(prefers-color-scheme: dark)').matches
-            ? 'dark'
-            : 'light';
+              ? 'dark'
+              : 'light';
 
     return {
         themeSetting: themeSetting as 'light' | 'dark' | 'system',
@@ -35,8 +35,8 @@ export const useThemeStore = create<ThemeStore>((set) => {
                 themeSetting !== 'system'
                     ? themeSetting
                     : window.matchMedia('(prefers-color-scheme: dark)').matches
-                    ? 'dark'
-                    : 'light';
+                      ? 'dark'
+                      : 'light';
 
             set({ appTheme: appTheme, themeSetting: themeSetting });
 
@@ -67,3 +67,22 @@ export const useTimeFormatStore = create<TimeFormatStore>((set) => {
         },
     };
 });
+export interface PreviewStore {
+    previewMode: boolean;
+    setPreviewMode: (previewMode: boolean) => void;
+}
+
+export const usePreviewStore = create<PreviewStore>((set) => {
+    const previewMode = typeof Storage !== 'undefined' && window.localStorage.getItem('previewMode') == 'true';
+
+    return {
+        previewMode: previewMode,
+        setPreviewMode: (previewMode) => {
+            if (typeof Storage !== 'undefined') {
+                window.localStorage.setItem('previewMode', previewMode.toString());
+            }
+
+            set({ previewMode: previewMode });
+        },
+    };
+});