Opera Mini - Small browser which is great for saving data
Go Launcher - Alternative interface for your app drawer and home screen, you can also install themes and icons with this
PicSpeed HD Wallpapers - Lots of great wallpapers, around 500,000 to choose from.
TuneIn Radio - Internet radio, access any station around the world (:
Jelly Bean Keyboard - Nice replacement keyboard
Pixlr-O-Matic - For editing photos.
These will work on other Android phones too!