The Sony EyeToy is cool, it's almost worth getting a playstation for! If you've not seen it, it's a camera that you put on top of your tv and it shows you on screen, it then superimposes things over the top that you can interact with, you can punch little kung-fu guys, play keepy uppy or make music by throwing your arms about.

A friend of mine works for a company that is a spin off from John Moores Uni (one of the two universities in Liverpool). They bascially do research and prototyping of technology and were commisioned by the BBC to come up with an interesting use for the big screens they have all over the country (this was even before they decided not to show football on them!)

Inspired by the EyeToy this is what they came up with :)
http://www.icdc.org.uk/bbcscreenmain10mb.wmv

Alli' Cat':

That's cool. Not sure the football will ever catch-on (and even if it did, we'd only loose on penalties!)