Teleport Rules
I know I say this about a new application every month, but Teleport is my new favorite application for Mac OS X.
If you use more than one mac at a time, and each have their own monitors, this application lets you share a single keyboard and mouse between the two (or more) computers. Way cooler than any KVM switch and you can use it with your laptops. Their description:
" teleport is a simple utility to let you use one single mouse and keyboard to control several of your Macs. Works on Panther and Tiger (sorry, no more Jaguar support). ��� Simply reach the edge of your screen, and your mouse teleports to your other Mac! The pasteboard can even be synchronized between the computers."
-CGP fo Life-