10. Unleashed The Back Break
http://www.youtube.com/watch?v=S9z5aWAQQ34 With an all-star cast including Bob Hoskins, Morgan Freeman, Vincent Regan, Tamer Hassan and, of course, Jet Li, Unleashed (aka Danny the Dog) sees Li enslaved by the mob since childhood and raised into behaving like a human attack dog, he escapes his captors and attempts to start a new life. In the opening scene we see Jet Lis character, Danny, jump onto a guys back (38 seconds in) whilst hes on all fours on the floor in front of him. Even though Li isn't the largest of men, I wouldnt mind betting that would hurt like hell.