I'm going to state a few obvious ones before they get in the way (help me make them funny, please!)

11) He'd be a firefighter, think about those miraculous saves and surprise cold winds!

12) He's a policemam

13) He's a writer (way overused variant in fanfic)

14) He's a clown in the Metropolis version of the Ringling Brothers Circus

15) He's an illusionist (using his powers to make the "magic" happen.) Slight of hand is nothing to an alien with superspeed!

16) He's a sports star! (see Superman Inc. comic for the backstory)

17) If there's a version of Barnum's Museum, he'd be "the alien from afar!"

CLARK: No. I'm just worried I'm a jinx.
JONATHAN: A jinx?
CLARK: Yeah. Let's face it, ever since she's known me, Lois's been kidnapped, frozen, pushed off buildings, almost stabbed, poisoned, buried alive and who knows what else, and it's all because of me.
-"Contact" (You're not her jinx, you're her blessing.)