My favorite iPhone accessory as of the moment is this green Gear4 Angry Birds iPhone 4 Pig King case! It looks absolutely bright and cool. I could only look at it in amusement. My friends went gaga and got their own colors too. Even those who aren't fans bought some...hahaha! Here's one from Abt Electronics, check it out..
Gear4 Angry Birds iPhone 4 Pig King Case