Here's a clip of Caleb Moore Crashing last night at X Games Aspen.

Apparently, after a little digging. He's really bad at it snowmobiling tricks. Search his name on YouTube and you'll find a plethora of clips of him crashing while trying to do stunts.

Unfortunately, though last night was probably his worst crash yet. It split his helmet though which is pretty scary.

Update:  Caleb Moore, the snowmobiler who crashed during the Winter X Games last week, died Thursday at the age of 25.