What were they thinking,
putting Doctor Octopus's mind
The Big Bang Theory Season 7, Episode 2
Doctor said I can't have sushi.
The Big Bang Theory Season 9, Episode 16
Wow! So that means you're a DOCTOR,
you're a DOCTOR...
The Big Bang Theory Season 4, Episode 24
The DOCTOR knows what the baby is,
the ultrasound tech knows, Raj knows,
The Big Bang Theory Season 10, Episode 4
And what kind of DOCTOR
removes shoes from asses?
The Big Bang Theory Season 1, Episode 2