Guest Star: Bob Newhart

Bob Newhart

Bob Newhart is an American stand-up comedian and actor known for his deadpan delivery and slight stammer. Newhart's career as a comic took off in the 1960s with his monologues, The Button-Down Mind of Bob Newhart and The Button-Down Mind Strikes Back!, which remain among the best-selling comedy albums in history.

As an actor he is best known for his sitcoms The Bob Newhart Show, which ran for six seasons in the 1970s, and Newhart, which ran for eight seasons between 1982 and 1990. In recent years, Newhart has made guest appearances on shows including ER, Desperate Housewives, NCIS and Hot in Cleveland. He also starred in the fantasy TV movie series The Librarian and has appeared in episodes of its follow up TV series.

Bob Newhart won the first Emmy award of his five-decade career for his appearance as Arthur Jeffries, "Professor Proton", in The Big Bang Theory episode "The Proton Resurgence". Newhart also made a cameo appearance as Professor Proton in the pilot episode of Young Sheldon.

Newhart's film career include roles in Catch-22, Legally Blonde 2: Red, White & Blonde, Elf, and Horrible Bosses. Newhart also lent his voice to The Rescuers movies.

You are viewing a list of Bob Newhart's 5 appearances on The Big Bang Theory.

  • The Proton Resurgence

    Season 6, Episode 22 - The Proton Resurgence
    Aired May 2, 2013

    Sheldon is delighted to learn that his childhood hero, Professor Proton, is still alive and available for party bookings.

    Appeared as Professor Proton - Arthur Jeffries

  • The Proton Displacement

    Season 7, Episode 7 - The Proton Displacement
    Aired November 7, 2013

    Sheldon is offended when Arthur Jeffries asks Leonard for help on a research paper instead of him.

    Appeared as Professor Proton - Arthur Jeffries

  • The Proton Transmogrification

    Season 7, Episode 22 - The Proton Transmogrification
    Aired May 1, 2014

    Sheldon's childhood hero Professor Proton takes on a new role in his life.

    Appeared as Professor Proton - Arthur Jeffries

  • The Opening Night Excitation

    Season 9, Episode 11 - The Opening Night Excitation
    Aired December 17, 2015

    After Sheldon makes a big decision about his relationship with Amy, Professor Proton appears to give a nervous Sheldon some advice.

    Appeared as Professor Proton - Arthur Jeffries

  • The Proton Regeneration

    Season 11, Episode 6 - The Proton Regeneration
    Aired November 2, 2017

    Sheldon sees Arthur again when he learns about a revival of Professor Proton's show with a new star.

    Appeared as Professor Proton - Arthur Jeffries

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