Guest Star :: John Mariano

 John Mariano has guest starred in 2 episodes of Young Sheldon.

  1. : A Baby Tooth and the Egyptian God of Knowledge

    320. A Baby Tooth and the Egyptian God of Knowledge as Richard Feynman [v.o.]

    Aired April 16, 2020

    When Sheldon is put under anesthetic at the dentist's office, he has a vision of a scientific breakthrough. Meanwhile, Dale leaves Georgie in charge of the store when he and Meemaw spend a weekend away.
  2. : Mitch's Son and the Unconditional Approval of a Government Agency

    414. Mitch's Son and the Unconditional Approval of a Government Agency as Envelope

    Aired April 15, 2021

    When the IRS accuses Sheldon of making a mistake, he’ll stop at nothing to prove them wrong. Also, Dale is forced to get a colonoscopy and tries to convince Meemaw to join him.
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