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
Multiplied by a MATRIX
of negative I comma zero...
The Big Bang Theory Season 5, Episode 7
He recommended that I go see
the third Matrix movie...
The Big Bang Theory Season 4, Episode 7
I'm in the MATRIX, Leonard;
I see everything.
The Big Bang Theory Season 5, Episode 10
the calculation
of nuclear MATRIX elements.
The Big Bang Theory Season 7, Episode 20