George Steinbrenner's hands-on ownership of the Yankees as well as his legendary feuds with managers, players and anyone who crossed him made him a figure ripe for caricature. And he played along—check out his unaired stint from Seinfeld and commercials with Billy Martin and Derek Jeter below.

And here are links to the Steinbrenner moments on Seinfeld (actor Lee Bear was the body, while the voice was by Larry David): Part 1 and part 2.