29. JOHN RITTER
What a full-blown, gifted comic actor Ritter was when he debuted in 1977 on the mediocre sitcom that brought him fame, Three's Company. He played Jack Tripper, a horndog pretending to be gay in order to share an apartment with two hot girls (Suzanne Somers and Joyce DeWitt). The premise was goofy, but in the pilot, Ritter established himself as a witty pro, with great leering double takes, a fine drunk act, and pratfalls performed as adroitly as a silent-movie clown.

Get This! Three's Company, season 1