Whoa. You install remotedroid on your android phone, run a jar on your HTPC, and presto! you have a touchpad and keyboard to control your computer at your fingertips. Too friggin cool. The default sensitivity is basically zero so you have to adjust it to your liking. While I probably won't use this for my main user interface since I have a logitech dinovo edge, I still think it's a rather innovative idea.
RemoteDroid demo from Joshua Sera on Vimeo.