
the calculation
of nuclear MATRIX elements.
The Big Bang Theory Season 7, Episode 20

You know how I know
we're not in the Matrix?
The Big Bang Theory Season 2, Episode 2

You can see the MATRIX, can't you?
The Big Bang Theory Season 1, Episode 12

I haven't seen him this stuck since he
tried to figure out the third Matrix movie.
The Big Bang Theory Season 3, Episode 14

...he said that Johnny Depp
was in The Matrix.
The Big Bang Theory Season 6, Episode 6