SnapRocket: Quickly navigate between desktop windows with just a few keystrokes. Easily switch between windows on a 13" MacBook or zoom between dual 30" Cinema Displays.
Wineskin Winery creates Mac OS X ports/wrappers for Windows programs/games, with an easy-to-use GUI, integrated Wine, X11 and an installer.
LiquidMac uses a particle system to imitate liquid and responds to laptop orientation.
