Movie Icons 27 is a nice collection that includes 8 high quality icons inspired by the following movies: 500 Days of Summer, Aliens in the attic, District 9, Funny People, Harry Potter and the Half-Blood Prince, New York, I Love You, Orphan and The Ugly Truth.
Every volume (disk), application, file, and folder on your Mac is represented by an icon. Volume icons tend to look like the item that they represent, for example, your hard disk looks like a hard drive, CDs and DVDs look like discs, and removable drives look like removable drives.
Movie Icons 27 icon set allows you to give an original touch to your desktop no matter the file types or applications you choose to associate.
To learn mode about changing your default Mac OS X icons you can access the Apple Support page HERE.