Springtomize - Tear down the walls
Winterboard - Give your iPhone or iPod Touch a graphical overhaul!
Lockinfo - You can find this app in Cydia - Tweaks.
Cylinder - Sexy homescreen icon animations
BossPaper - BossPaper is a wallpapers manager for your jailbroken iPhone or iPod Touch that uses very little...
IntelliScreenX - Need to know where your next meeting is? Do you have any new email?