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 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
You can see the MATRIX, can't you?
The Big Bang Theory Season 1, Episode 12
...he said that Johnny Depp
was in The Matrix.
The Big Bang Theory Season 6, Episode 6