Line Rider

this seems to be doing the rounds so just thought i'd share..

Line rider:
http://www.deviantart.com/deviation/40255643/

not a game really, more of a toy.

draw lines, and a little man on a sled slides down them (so you can create your own stunts)
very cool, and responsible for me losing quite a few hours at work recently..

That's so cool.

got bored after 3 hours of playing