Mac Folder Icons 001 is a nice collection that includes almost 30 custom icons that will look great on your desktop.
Mac Folder Icons 001 set includes the following icons: Arrested Development, Avatar (Animation), Avid, Dead like me, Dexter, Dollhouse, Espartacus, Films, Glee, Haven, Heart, iPhone, iTunes, JDownloader, Misfits, Person Unkown, Sanctuary, Sons of Anarchy, Spotify, Star, Supernatural (Animation), TVShows, Utorrent, Vector and Wii.
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.
Mac Folder Icons 001 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.