Give your iPhone or iPod Touch a graphical overhaul! WinterBoard allows you to customize the appearance of your jailbroken iOS device and install third party themes. You can only get Winterboard from Cydia (on jailbroken iOS devices).
Need to know where your next meeting is? Do you have any new email? What about a quick glimpse at your SMS/Text messages or weather? Want to catch the latest news, but Safari is too slow? IntelliScreen allows you to glimpse at your critical data on your iPhone "Slide to...
BossPaper is a wallpapers manager for your jailbroken iPhone or iPod Touch that uses very little processor or memory. You can set wallpapers for 1st-gen or 2nd-gen devices which don't support wallpapers in iOS 4, or rotate wallpapers as a slideshow.
CameraWallpaper lets you use the video camera of your jailbroken iPhone as your wallpaper. You can see through your homescreen, manage your app icons while having a realtime view of what's in front of you, and capture a photo at any time.