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
Multiplied by a MATRIX
of negative I comma zero...
The Big Bang Theory Season 5, Episode 7
You can see the MATRIX, can't you?
The Big Bang Theory Season 1, Episode 12