diff --git a/lib/Tmdb/Model/Collection/Images.php b/lib/Tmdb/Model/Collection/Images.php
index 121981cd..bafaaeea 100644
--- a/lib/Tmdb/Model/Collection/Images.php
+++ b/lib/Tmdb/Model/Collection/Images.php
@@ -12,8 +12,10 @@
  */
 namespace Tmdb\Model\Collection;
 
+use Tmdb\Factory\ImageFactory;
 use Tmdb\Model\Common\Collection;
 
+use Tmdb\Model\Filter\ImageFilter;
 use Tmdb\Model\Image;
 
 class Images extends Collection {
@@ -63,7 +65,7 @@ public function filterPosters()
     {
         return $this->filter(
             function($key, $value) {
-                if ($value instanceof Image\PosterImage) { return true; }
+                if ($value instanceof ImageFilter && $value instanceof Image\PosterImage) { return true; }
             }
         );
     }
@@ -77,7 +79,7 @@ public function filterBackdrops()
     {
         return $this->filter(
             function($key, $value) {
-                if ($value instanceof Image\BackdropImage) { return true; }
+                if ($value instanceof ImageFilter && $value instanceof Image\BackdropImage) { return true; }
             }
         );
     }
@@ -91,7 +93,7 @@ public function filterProfile()
     {
         return $this->filter(
             function($key, $value) {
-                if ($value instanceof Image\ProfileImage) { return true; }
+                if ($value instanceof ImageFilter && $value instanceof Image\ProfileImage) { return true; }
             }
         );
     }
@@ -105,7 +107,7 @@ public function filterStills()
     {
         return $this->filter(
             function($key, $value) {
-                if ($value instanceof Image\StillImage) { return true; }
+                if ($value instanceof ImageFilter && $value instanceof Image\StillImage) { return true; }
             }
         );
     }
@@ -120,7 +122,7 @@ public function filterMaxWidth($width)
     {
         return $this->filter(
             function($key, $value) use ($width) {
-                if ($value->getWidth() <= $width && $value->getWidth() !== null) { return true; }
+                if ($value instanceof ImageFilter && $value->getWidth() <= $width && $value->getWidth() !== null) { return true; }
             }
         );
     }
@@ -135,7 +137,7 @@ public function filterMinWidth($width)
     {
         return $this->filter(
             function($key, $value) use ($width) {
-                if ($value->getWidth() >= $width && $value->getWidth() !== null) { return true; }
+                if ($value instanceof ImageFilter && $value->getWidth() >= $width && $value->getWidth() !== null) { return true; }
             }
         );
     }
@@ -150,7 +152,7 @@ public function filterMaxHeight($height)
     {
         return $this->filter(
             function($key, $value) use ($height) {
-                if ($value->getHeight() <= $height && $value->getHeight() !== null) { return true; }
+                if ($value instanceof ImageFilter && $value->getHeight() <= $height && $value->getHeight() !== null) { return true; }
             }
         );
     }
@@ -165,7 +167,7 @@ public function filterMinHeight($height)
     {
         return $this->filter(
             function($key, $value) use ($height) {
-                if ($value->getHeight() >= $height && $value->getHeight() !== null) { return true; }
+                if ($value instanceof ImageFilter && $value->getHeight() >= $height && $value->getHeight() !== null) { return true; }
             }
         );
     }
@@ -184,7 +186,7 @@ public function filterBestVotedImage()
          * @var $image Image
          */
         foreach($this as $image) {
-            if ($image->getVoteAverage() > $voteAverage) {
+            if ($image instanceof ImageFilter && $image->getVoteAverage() > $voteAverage) {
                 $voteAverage  = $image->getVoteAverage();
                 $currentImage = $image;
             }
diff --git a/lib/Tmdb/Model/Common/Collection.php b/lib/Tmdb/Model/Common/Collection.php
index a7b0739b..54363c4b 100644
--- a/lib/Tmdb/Model/Common/Collection.php
+++ b/lib/Tmdb/Model/Common/Collection.php
@@ -13,6 +13,9 @@
 namespace Tmdb\Model\Common;
 
 use Guzzle\Common\Collection as GuzzleCollection;
+use Tmdb\Model\Filter\AdultFilter;
+use Tmdb\Model\Filter\CountryFilter;
+use Tmdb\Model\Filter\LanguageFilter;
 
 class Collection extends GuzzleCollection {
     protected $data = array();
@@ -70,7 +73,7 @@ public function filterLanguage($language = 'en')
     {
         return $this->filter(
             function($key, $value) use ($language) {
-                if ($value->getIso6391() == $language) { return true; }
+                if ($value instanceof LanguageFilter && $value->getIso6391() == $language) { return true; }
             }
         );
     }
@@ -85,7 +88,7 @@ public function filterCountry($country = 'US')
     {
         return $this->filter(
             function($key, $value) use ($country) {
-                if ($value->getIso31661() == $country) { return true; }
+                if ($value instanceof CountryFilter && $value->getIso31661() == $country) { return true; }
             }
         );
     }
@@ -100,7 +103,7 @@ public function filterAdult($adult = false)
     {
         return $this->filter(
             function($key, $value) use ($adult) {
-                if ($value->getAdult() == $adult) { return true; }
+                if ($value instanceof AdultFilter && $value->getAdult() == $adult) { return true; }
             }
         );
     }
diff --git a/lib/Tmdb/Model/Common/Country.php b/lib/Tmdb/Model/Common/Country.php
index 03d6bcbe..fb20f4e6 100644
--- a/lib/Tmdb/Model/Common/Country.php
+++ b/lib/Tmdb/Model/Common/Country.php
@@ -12,7 +12,10 @@
  */
 namespace Tmdb\Model\Common;
 
-class Country extends AbstractModel {
+use Tmdb\Model\AbstractModel;
+use Tmdb\Model\Filter\CountryFilter;
+
+class Country extends AbstractModel implements CountryFilter {
 
     private $iso31661;
     private $name;
diff --git a/lib/Tmdb/Model/Common/SpokenLanguage.php b/lib/Tmdb/Model/Common/SpokenLanguage.php
index b3d21f15..d9dfb070 100644
--- a/lib/Tmdb/Model/Common/SpokenLanguage.php
+++ b/lib/Tmdb/Model/Common/SpokenLanguage.php
@@ -12,7 +12,7 @@
  */
 namespace Tmdb\Model\Common;
 
-class SpokenLanguage extends AbstractModel {
+class SpokenLanguage extends AbstractModel implements LanguageFilter {
 
     private $iso6391;
     private $name;
diff --git a/lib/Tmdb/Model/Common/Translation.php b/lib/Tmdb/Model/Common/Translation.php
index 12d4c8b6..6b5c531f 100644
--- a/lib/Tmdb/Model/Common/Translation.php
+++ b/lib/Tmdb/Model/Common/Translation.php
@@ -13,8 +13,9 @@
 namespace Tmdb\Model\Common;
 
 use Tmdb\Model\AbstractModel;
+use Tmdb\Model\Filter\LanguageFilter;
 
-class Translation extends AbstractModel {
+class Translation extends AbstractModel implements LanguageFilter {
 
     private $iso6391;
     private $name;
diff --git a/lib/Tmdb/Model/Filter/AdultFilter.php b/lib/Tmdb/Model/Filter/AdultFilter.php
new file mode 100644
index 00000000..0ac9337c
--- /dev/null
+++ b/lib/Tmdb/Model/Filter/AdultFilter.php
@@ -0,0 +1,17 @@
+<?php
+/**
+ * This file is part of the Tmdb PHP API created by Michael Roterman.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @package Tmdb
+ * @author Michael Roterman <michael@wtfz.net>
+ * @copyright (c) 2013, Michael Roterman
+ * @version 0.0.1
+ */
+namespace Tmdb\Model\Filter;
+
+interface AdultFilter {
+    public function getAdult();
+}
\ No newline at end of file
diff --git a/lib/Tmdb/Model/Filter/CountryFilter.php b/lib/Tmdb/Model/Filter/CountryFilter.php
new file mode 100644
index 00000000..d77a259a
--- /dev/null
+++ b/lib/Tmdb/Model/Filter/CountryFilter.php
@@ -0,0 +1,17 @@
+<?php
+/**
+ * This file is part of the Tmdb PHP API created by Michael Roterman.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @package Tmdb
+ * @author Michael Roterman <michael@wtfz.net>
+ * @copyright (c) 2013, Michael Roterman
+ * @version 0.0.1
+ */
+namespace Tmdb\Model\Filter;
+
+interface CountryFilter {
+    public function getIso31661();
+}
\ No newline at end of file
diff --git a/lib/Tmdb/Model/Filter/ImageFilter.php b/lib/Tmdb/Model/Filter/ImageFilter.php
new file mode 100644
index 00000000..cae02dd1
--- /dev/null
+++ b/lib/Tmdb/Model/Filter/ImageFilter.php
@@ -0,0 +1,16 @@
+<?php
+/**
+ * This file is part of the Tmdb PHP API created by Michael Roterman.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @package Tmdb
+ * @author Michael Roterman <michael@wtfz.net>
+ * @copyright (c) 2013, Michael Roterman
+ * @version 0.0.1
+ */
+namespace Tmdb\Model\Filter;
+
+interface ImageFilter {
+}
\ No newline at end of file
diff --git a/lib/Tmdb/Model/Filter/LanguageFilter.php b/lib/Tmdb/Model/Filter/LanguageFilter.php
new file mode 100644
index 00000000..cc66b63c
--- /dev/null
+++ b/lib/Tmdb/Model/Filter/LanguageFilter.php
@@ -0,0 +1,17 @@
+<?php
+/**
+ * This file is part of the Tmdb PHP API created by Michael Roterman.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @package Tmdb
+ * @author Michael Roterman <michael@wtfz.net>
+ * @copyright (c) 2013, Michael Roterman
+ * @version 0.0.1
+ */
+namespace Tmdb\Model\Filter;
+
+interface LanguageFilter {
+    public function getIso6391();
+}
\ No newline at end of file
diff --git a/lib/Tmdb/Model/Image.php b/lib/Tmdb/Model/Image.php
index 469f2acc..b5435708 100644
--- a/lib/Tmdb/Model/Image.php
+++ b/lib/Tmdb/Model/Image.php
@@ -12,7 +12,10 @@
  */
 namespace Tmdb\Model;
 
-class Image extends AbstractModel {
+use Tmdb\Model\Filter\ImageFilter;
+use Tmdb\Model\Filter\LanguageFilter;
+
+class Image extends AbstractModel implements ImageFilter, LanguageFilter {
 
     const FORMAT_POSTER   = 'poster';
     const FORMAT_BACKDROP = 'backdrop';
diff --git a/lib/Tmdb/Model/Movie/AlternativeTitle.php b/lib/Tmdb/Model/Movie/AlternativeTitle.php
index b7db2e4a..6541e763 100644
--- a/lib/Tmdb/Model/Movie/AlternativeTitle.php
+++ b/lib/Tmdb/Model/Movie/AlternativeTitle.php
@@ -13,8 +13,9 @@
 namespace Tmdb\Model\Movie;
 
 use Tmdb\Model\AbstractModel;
+use Tmdb\Model\Filter\CountryFilter;
 
-class AlternativeTitle extends AbstractModel {
+class AlternativeTitle extends AbstractModel implements CountryFilter {
 
     private $iso31661;
     private $title;
diff --git a/lib/Tmdb/Model/Movie/Release.php b/lib/Tmdb/Model/Movie/Release.php
index 89856062..2e48dc48 100644
--- a/lib/Tmdb/Model/Movie/Release.php
+++ b/lib/Tmdb/Model/Movie/Release.php
@@ -13,8 +13,9 @@
 namespace Tmdb\Model\Movie;
 
 use Tmdb\Model\AbstractModel;
+use Tmdb\Model\Filter\CountryFilter;
 
-class Release extends AbstractModel {
+class Release extends AbstractModel implements CountryFilter {
 
     private $iso31661;
     private $certification;