
- Nice to meet you.
- Hello.
The Big Bang Theory Season 10, Episode 6

Hello?
The Big Bang Theory Season 7, Episode 16

Oh, HELLO, Leonard.
What a pleasant surprise.
The Big Bang Theory Season 4, Episode 24

Hello, gentlemen.
The Big Bang Theory Season 11, Episode 8
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Hello!"
Hello!
The Big Bang Theory Season 6, Episode 5