Hint. Madame Curie had her husband
to help her.
The Big Bang Theory Season 3, Episode 7
Hint: it's based
on Sanskrit,
The Big Bang Theory Season 12, Episode 2
Hint: He and Darth Vader
are tied for number two.
The Big Bang Theory Season 3, Episode 15
Well, I'll give you a HINT, Walt.
Breaking Bad Season 5, Episode 13
All right, give me a HINT.
The Big Bang Theory Season 7, Episode 7