NeverSleep is an app that adds an icon to the menu bar to prevent Macs from automatically going to sleep, dimming the screen, or starting screen savers. Right-click (or ⌘-click) the icon to show the menu and disable either lid and/or idle sleep on any MacBook.
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.
