
Hint: He and Darth Vader
are tied for NUMBER two.
The Big Bang Theory Season 3, Episode 15

Why don't you rank that NUMBER one?
You're on your own for the rest.
The Big Bang Theory Season 2, Episode 13

- Number 42.
- Whoa!
The Big Bang Theory Season 4, Episode 5

The image of any NUMBER
of evil lighthouse keepers...
The Big Bang Theory Season 1, Episode 17

Fantastic Four,
annual NUMBER three from 1965,
The Big Bang Theory Season 5, Episode 24