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

Yes. Sorry, tell me about Professor Proton.
The Big Bang Theory Season 6, Episode 22

next to Professor Proton,
I would not have believed you.
The Big Bang Theory Season 7, Episode 7

Professor Proton hosted my favorite
science show when I was a child.
The Big Bang Theory Season 6, Episode 22

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