Damn, I remember playing that thing when it was in beta.. wasted *soooo* much time messing around with trying to get that little dude to do flips, and invariably always ended with him crashing! Stopped playing it, but I remember some people got crazy good with it and make these really artistic looking designs that had the guy sledding around for forever.
Just clicked over to the site to check it out now, and they want me to install some kind software to make it run, and I didn't do it, so no idea what it looks like/how it works now.. but I do remember having some fun with it and wasting major time messing around with it before! (so, be warned! lol)