
It's time for a very special guest CALLER.
The Big Bang Theory Season 8, Episode 20

All right, we have our next CALLER.
The Big Bang Theory Season 10, Episode 21

You know what?
That's not a flag question, next CALLER.
The Big Bang Theory Season 9, Episode 15

Need the location of an incoming CALLER.
Breaking Bad Season 5, Episode 14

Hello, CALLER. You are on with Penny and Wil
from Serial Ape-ist 2.
The Big Bang Theory Season 8, Episode 20