A couple weeks ago was riding with a bud around a quarry in New Hampshire... he went up the hill first, looked easy... was a little too steep for me. Rolled the Grizzly...

http://www.youtube.com/watch?v=jTNyXjf0wa0

It rolled over my leg and helmet.... but only a few bruises.

 

It's those short steep ones that catch you. Have friends who learned the hard way to stand up on the footwells and get your body over the handlebars.

 

That looked like it hurt.