Hello, I'm Doctor Sheldon Cooper.
The Big Bang Theory Season 10, Episode 7
Come say HELLO.
The Big Bang Theory Season 1, Episode 10
Hello?
Breaking Bad Season 5, Episode 8
Uh, HELLO?
The Big Bang Theory Season 8, Episode 24
Hello. Hello, HELLO, HELLO.
JESSE: Ha, ha, ha.
Breaking Bad Season 2, Episode 5