They're not the best. Physics is the best.
The Big Bang Theory Season 6, Episode 3
...for some failing to attend Physics
Department paintball strategy meeting.
The Big Bang Theory Season 2, Episode 16
It won't happen. He is not interested
in anything but PHYSICS.
The Big Bang Theory Season 1, Episode 12
See the paper in The American
Physics Journal on supersolids?
The Big Bang Theory Season 4, Episode 3
Homespun stories,
knowledge of PHYSICS
The Big Bang Theory Season 5, Episode 5