Guest Star: Bob Newhart

Bob Newhart

Bob Newhart is an American stand-up comedian and actor known for his deadpan delivery and slight stammer. As an actor he is best known for his sitcoms The Bob Newhart Show and Newhart. In recent years, Newhart has made guest appearances on shows including ER, Desperate Housewives and NCIS. 

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".

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
    Airs November 2, 2017

    Sheldon goes head-to-head with Wil Wheaton for the role of the new Professor Proton. Also, Penny steps in to take care of Halley when Bernadette and Wolowitz both wind up on bed rest.

    Appeared as Professor Proton - Arthur Jeffries

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