Sarah is a free and open source computer voice interaction program for Mac OS X computers. It allows users to speak commands to their Mac and it will take action and speak back to them. Sarah also has background "agents" that can do tasks in the background and report back to the user.
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.
