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Appearances
The Big Bang Theory
Guest cast, played by Bob Newhart
- Episode 6x22: The Proton Resurgence (May 2, 2013)
- Episode 7x07: The Proton Displacement (Nov 7, 2013)
- Episode 7x22: The Proton Transmogrification (May 1, 2014)
- Episode 9x11: The Opening Night Excitation (Dec 17, 2015)
- Episode 11x06: The Proton Regeneration (Nov 2, 2017)
- Episode 12x05: The Planetarium Collision (Oct 18, 2018)