[nicfit]

Keeping it to non-super-heroic qualities, I'd say I'd like to be the best music producer.
I'd probably get to work with lots of interesting artists and stuff, and make good money with the superstars.
I'd produce the new Nelly Furtado album.
Then I'd persuade Albini to let me produce the new Shellac.
Which would be their best, hands down.
Plus I appreciate the work of many producers, so I'd be proud of myself when putting out something that sounds good. Which, being the best music producer ever, would mean every time I work.