Evoluce toy around with using a Kinect to control Windows, but it's now taken things one step further with its new "Win & I" software, which promises to let anyone do the same with minimal effort. That comes in both a home edition that offers gesture controls for Windows 7 itself, plus Media Center and other applications (which could be particularly handy for a home theater), as well as a business edition that apparently adds some extra controls specifically tailored to Microsoft Office, and PowerPoint in particular. Head on past the break for a quick video demonstration, and hit up the link below to snag the software if you're interested -- the home edition runs €20, or just under $30 (Kinect not included, obviously).
Update: Well, it looks like Evoluce already has a bit of competition. Upstart company So Touch has now also released its Air Presenter software that will let you liven up your next presentation with more gesturing and hand-waving than usual.