I'm still on the look-out for some other good YouTube fight scenes. Meanwhile, here's how not to get cast in a kung-fu movie.
Most people I know have seen Shaft and his backflip-gone-wrong, and I've seen the rest of this video but I'm not sure everyone who reads this has, so here you go.
There are dozens of uploads of this video, all from the same two not very good quality sources, so after going through all of them looking for a good one, I just picked one arbitrarily. It gets the point across.