You know how I know
we're not in the Matrix?
The Big Bang Theory Season 2, Episode 2
the calculation
of nuclear MATRIX elements.
The Big Bang Theory Season 7, Episode 20
...he said that Johnny Depp
was in The Matrix.
The Big Bang Theory Season 6, Episode 6
I'm in the MATRIX, Leonard;
I see everything.
The Big Bang Theory Season 5, Episode 10