KVM's and Synergy

Mark Watson writes about using a KVM switch to share screens between monitors.

Even better, if you have the desk space, is Synergy which allows the mouse to move between machines (Windows/Linux/Mac). You can even copy text between OS's!

This way, there is no context switch... you can keep reference/email up on different machines. Most folks have spare screens as the move to flatscreens continues.. why not use them?