Flutterby™! : Synergy

Right now the Linux machine has its own monitor and is across the room from my primary workstation, because we have the helicopter controls hooked up to it, and we use it for things that happen simultaneously with me doing development.

However, Starjewel points to Synergy, which lets you share a single mouse and keyboard across displays for Windows, Linux and Mac systems. When we get into the Linux port, this'll be important.