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!