Smallville, Season 4

Clark:
How did I do that?

Chloe:
Why did I always picture myself on the other end of this conversation? Smallville was hit with the world's biggest meteor shower when you were little. Now, I know this sounds way out there, but some of the meteor rocks have had an extraterrestrial effect on certain people in the town, and it's my theory that you were one of them.

Clark:
Extraterrestrial powers? You mean I'm some sort of alien?

Chloe:
No. No, of course not.

Clark:
A mutant?

Chloe:
Uh... yeah... who has saved my life on more than one occasion. See, you've sort of taken it upon yourself to be Smallville's self-appointed hero. And if you ask me, I think that that is amazing.