Line Rider
 

I thought for sure this game had a link on the TFP but I can't find anything. Anyway, here's the link: http://officiallinerider.com/play.html

It's just a fine little game where you make your own track for the little guy to sled down. I suggest playing the game for at least a few minutes before clicking any other links.

Now, Let's check out some of badass stuff people have created!

Line Rider Die at the slopes
http://youtube.com/watch?v=2SVMFCZgvNM

Jagged Peak Adventure
http://youtube.com/watch?v=bcu8ZdJ2dQo

Urban Run
http://youtube.com/watch?v=sZ4S-MYoQKQ

Super Mario!
http://youtube.com/watch?v=rn8ULJGboOE

Make Believe!
http://www.youtube.com/watch?v=fTnT66LGrdY

And my favorite...
Discarded
http://youtube.com/watch?v=cW44BpXpjYw
The way he uses the same ramp like 5 times is so great.


More links on youtube just search "line rider"