Jeffrey Weissman is an American actor. He has appeared in dozens of motion pictures and TV shows, most notably as George McFly in Back to the Future Part II and III with Michael J. Fox, and as Teddy Conway in Pale Rider with Clint Eastwood, with John Lithgow in Twilight Zone The Movie, guest star spots on Scarecrow and Mrs. King, Max Headroom, Dallas, The Man Show, and with Dick Van Dyke on Diagnosis Murder and as Screechs Guru on Saved by the Bell.
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Source: Wikipedia