This is another of my favorite YouTube clips, which I featured on this blog a couple of years ago. It is of Joey Gathright, one-time Red Sox outfielder (who has also been with the Rays, Orioles and Royals, among others) who made this video when he was back in the minors in 2002.
It is an amazing jump clean over the top of a car, and he does it twice. You have to see this to believe it.
This is clip number 11. Enjoy.