
They cast the new
Professor Proton.
The Big Bang Theory Season 11, Episode 15

No, they're watching
the new Professor Proton.
The Big Bang Theory Season 11, Episode 15

Yeah, and my eighth favorite
episode of Professor Proton
The Big Bang Theory Season 7, Episode 7

Nice to meet you, Professor Proton.
The Big Bang Theory Season 6, Episode 22

Wil Wheaton wants you to be
on Professor Proton.
The Big Bang Theory Season 11, Episode 15