Here's some specific suggestions. I was most recently fascinated by this video on head tracking "virtual reality". http://www.youtube.com/watch?v=Jd3-eiid-Uw h

Here's some specific suggestions. I was most recently fascinated by this video on head tracking "virtual reality". http://www.youtube.com/watch?v=Jd3-eiid-Uw http://www.youtube.com/watch?v=Jd3-eiid-Uw Another cool thing if you're into DIY robots (not really educational, but I found it inspiring) is the Yellow Drum Machine. http://www.youtube.com/watch?v=_RyodnisVvU http://www.youtube.com/watch?v=_RyodnisVvU Not sure why I got on the robot tangent but here's another good one, a 4-legged robot that's pretty good at navigating hills and obstacles. Especially the recovery from a fall sequence around 1:25. http://www.youtube.com/watch?v=W1czBcnX1Ww http://www.youtube.com/watch?v=W1czBcnX1Ww And here is hacking the Wii Fit controller and a Roomba to do a sort of vacuum-by-surfing... thing? http://www.youtube.com/watch?v=tLbprdjTX0w&feature=related http://www.youtube.com/watch?v=tLbprdjTX0w&feature=relat...