Hello.
The Big Bang Theory Season 12, Episode 14
Hello?
The Big Bang Theory Season 1, Episode 2
Hello? Oh, hold on.
The Big Bang Theory Season 8, Episode 18
Hello, I'm Doctor Sheldon Cooper.
The Big Bang Theory Season 10, Episode 7
Hello, you all remember Tam,
my best friend from high school.
The Big Bang Theory Season 12, Episode 4