
H-Him and
his GEOLOGY.
The Big Bang Theory Season 12, Episode 24

Wait. What's wrong with GEOLOGY?
The Big Bang Theory Season 7, Episode 20

Hey, you want to hear
one of my GEOLOGY songs?
The Big Bang Theory Season 11, Episode 13

generally regarded
as the Nobel Prize of GEOLOGY.
The Big Bang Theory Season 12, Episode 6

Stuart, this is Bert
from the Caltech GEOLOGY lab
The Big Bang Theory Season 10, Episode 6