Flying lessons?

[paddy]

Don't think I've seen this one here before. You can skip through to about 35 seconds if you are impatient (the end result is much funnier than the title suggests):

http://www.break.com/index/brazilian-guy-loses-bike-and-slams-into-post.html

While I was looking I also found this. It even has a (quad) bike in it about halfway through. Other than that, it's not really bike related:

http://www.break.com/index/great-fails-of-08.html