
It's Leslie Winkle, Penny.
She belittles my research.
The Big Bang Theory Season 2, Episode 2

There won't be any room until they get rid
of the permanent Leslie Winkle exhibit.
The Big Bang Theory Season 2, Episode 6

Yeah, Leslie Winkle.
The answer to the question:
The Big Bang Theory Season 1, Episode 13

There was, uh, Joyce Kim,
Leslie Winkle...
The Big Bang Theory Season 2, Episode 2

...why does it have to be Leslie Winkle?
The Big Bang Theory Season 2, Episode 2