Aha. There you go.
Breaking Bad Season 2, Episode 10
No, I think it's stupid.
Aha!
The Big Bang Theory Season 7, Episode 16
answer the door or should I
open it and say "AHA" again?
The Big Bang Theory Season 7, Episode 2
Aha! So I am working with you?
The Big Bang Theory Season 3, Episode 4
Aha!
The Big Bang Theory Season 7, Episode 2