CinemaBlend Young Sheldon, called "Cowboy Aerobics and 473 Grease-Free Bolts." Young Sheldon has included no shortage of big-name guest stars and cameos over its four seasons on CBS so far, but the latest might be one of the very best of the bunch. None other than Baywatch and David Hasselhoff turned up on an episode of the hit CBS show, and he was a perfect fit for the role. Why? Because Hasselhoff was (sort of) playing himself, and showrunner Steve Molaro has the best reason for the casting. In the episode, Georgie joined forces with Mr. Lundy (played by a pretty big name in TV as wel...