Sharing one Mouse and Keyboard across multiple Computers
Hackaday informed of something wonderful. A small little "hack app"called synergy that lets you use one single mouse and keyboard across multiple computers. The programm also transfers you clipboards across the machines. So just scroll over to the edge of you screen and instantly see you mouse on the other computer and have all your current belonging taking over as well. Sadly the software is not localized for german keyboards yet and also the clipboardsharing only works for text at the moment - but its actively developed and works on UNIX and Windows machines as well. So you can move your mouse from your powerbook over to your Linux machine and see it appear there all while working on your ergonomically keyboard.
Or have two VJ machines next to each other and only one mouse and keyboard in front of your video mixer so you donīt have to cross your arm while performing... ;)
UPDATE: there is also a programm called Teleport just for OSX that does it all in a GUI environment and seems much more polished.