Springtomize - Tear down the walls
Transparent Screen Lock - Password protect your workstation or server with "Transparent Screen Lock" while monitoring programs that are running.
ClearLock - A transparent screen locker.
Cylinder - Sexy homescreen icon animations
BlueLife KeyFreeze - FREE Windows application that blocks your keyboard and mouse without “locking” the screen.
SwitcherMod - SwitcherMod lets you customize the iOS4 multitasking bar.