Screen Divider is a software application that allows you to easily divide up your applications on a single monitor. It will locate the window at the top edge, and then you can drag it to the desired location.
LiquidMac uses a particle system to imitate liquid and responds to laptop orientation.
Wineskin Winery creates Mac OS X ports/wrappers for Windows programs/games, with an easy-to-use GUI, integrated Wine, X11 and an installer.
