ICS Easter Egg!
To access this easter egg, go to Settings -> About phone, and tap the 'Android version' until the cute android ics shows up! Then, if you press and hold on the android, the android will get bigger, and have a cute animation (screen capture shown below)! Someone at Google really likes NyanCat and made a NyanDroid. ;) This only works on android phones with ICS. If you have an android phone with Gingerbread, there is still an easter egg by doing the same thing, except it's a cute picture instead.