Kripke, Professor Woo, Professor Klein,
The Big Bang Theory Season 10, Episode 16
Professor Woo.
The Big Bang Theory Season 6, Episode 20
Oh, not you, Dr. Woo.
You're fine.
The Big Bang Theory Season 7, Episode 6
the pitching of WOO.
The Big Bang Theory Season 11, Episode 11
Woo!
The Big Bang Theory Season 7, Episode 6