I was thinking of buying one of these for my PC (
http://www.logitech.com/index.cfm/ke.../3848&cl=us,en ) so that I can control it from the couch when watching movies, but they're too expensive. I started looking at my Touch and figured that it could do nearly the same thing with the right software (using the Touch Keyboard and the rest of the screen as the trackpad area).
I searched around a bit but haven't found anything yet. Would be a pretty cool piece of software.