Soap

http://patrickbaudisch.com/projects/soap/
http://www.youtube.com/watch?v=hohu8SSpduM (video of it in action)

It's like a furry condom for your optical mice that lets you use it in mid-air. Have any of you ever seen anything like this? The soap device looks like it will only work with a specific brand or type of mouse though, but it does look cool. It makes it act almost like a remote; I think those new multimedia center Windows versions or whatever they're called have remotes for their computers, and I thought this was almost similar.

Although I'm skeptical about how well it would work in FPS games like they showed on the movie. I'd doubt you could control your AWP or any other sniper rifle, hell even a regular gun, with the accuracy you need to be good at the game, especially on the multiplayer arena. It's a nice lazy invention though, especially if you got your computer hooked up to a big screen TV with some video out and have a decent range wireless keyboard and mouse.

Jam it back in, in the dark.