Guest Star :: Bob Newhart
Bob Newhart is an American stand-up comedian and actor known for his deadpan delivery and slight stammer. Newhart first came to fame in the 1960s with his comedy album, The Button-Down Mind of Bob Newhart.
As an actor he is best known for his long-running sitcoms The Bob Newhart Show and Newhart in the 1970s and '80s. In recent years, Newhart has made guest appearances on shows including ER, Desperate Housewives, NCIS, and The Big Bang Theory.
Bob Newhart won the first Emmy award of his five-decade career for his appearance as Arthur Jeffries, a.k.a. Professor Proton, in The Big Bang Theory episode "The Proton Resurgence".
On the big screen, Newhart has appeared in films including Catch-22, The Librarian, Legally Blonde 2: Red, White & Blonde, Elf, and Horrible Bosses.
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Bob Newhart has guest starred in 4 episodes of Young Sheldon.
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101. Pilot as Professor Proton
Aired September 25, 2017
Sheldon and Missy watch Professor Proton's science show on TV as he demonstrates a clock powered by a potato.
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109. Spock, Kirk, and Testicular Hernia as Professor Proton
Aired December 21, 2017
When Sheldon tricks Missy into giving up control of the TV, he switches to the Professor Proton show.
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310. Teenager Soup and a Little Ball of Fib as Professor Proton
Aired December 12, 2019
Sheldon pretends to be sick to avoid having to swim in the pool at school. Meanwhile, Dr. Sturgis spies on Meemaw's new boyfriend.
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320. A Baby Tooth and the Egyptian God of Knowledge as Professor Proton [v.o.]
Aired April 16, 2020
During a tea-induced hallucination, Sheldon imagines the posters in his room talking to him.