Well, Storm can pretty much do that.
No one’s picked Superman? Well how can you beat Superman? He’s like God (except fot that kryptonite thing). Super strength, invulnerability. He can fly at unlimited speed. He can fly in space and don’t forget X-Ray vision. Come on, we all know what we’d do with X-Ray vison.
Screw the X-ray vision, Diogenes, give me the pheromes that make me irresistable to all babes.
DreadCthulhu: It wouldn’t be a problem if I were bisexual. 
I’d pick 3.
The power to turn invisible(with my clothes on), the power to defeat any lock or security system with ease, and the ability to move without sound or leaving any trace of my existance there.
That could be very useful.
Mimic from X-Men comics.
Powers: Able to take on all the superlative abilities of anyone within a one mile radius, if I’m remembering my collector’s card right.
Limitations: Only able to take on the abilities of people within a five hundred yard radius.
Reasons: Well, duh. I’d always be the fastest, strongest, most flexible, resilient, etc person around me. It’d be especially useful if I decided to pursue a sports career.
I’d take the powers of a character who is immortal. Is Superman immortal? Actually no, after reading “Man of Steel, Woman of Kleenex”, I decided I wouldn’t want Superman’s powers. Just someone who’s immortal.
Barring that, it would be cool to have the powers of The Mule, from Isaac Asimov’s “Foundation” series…
Well, I’ve seen some X-men, and I’d take Jean Gray’s power, except that I have to transmit force from my body to do that. That would be cool, I just have to twitch my hands around, and rope does stuff. And it doesn’t need to be rope. But I have to have the physical strength to do it normally, even if I can’t reach.
Taking that a step further, I’d take Dark Phoenix’s power. Munch! There goes a star. Burp! Where is Galactus, I want an arm wrestle!
Limitation: tendency to cosmic-level violence, killing races of people, that sort of thing. Maybe, then Rachel Summers’ powers: she used to mess up from time to time because she was inexperienced with them.
Not to beat a dead horse, but…Super-Skrull! With the power of super-elasticity, a prehensile penis is only one of the many party tricks which are child’s play for the Super-Skrull!
[Happy Birthday]
You look like a monkey / and you smell like one too!
[/Happy Birthday]
Yes, otto, but if I get all the babes, who gives a rat’s ass? Certainly not me.
I’d have the powers of the Spectre, spirit of vengeance, basically being able to give vengeance on wrong doers. Essentially invincible and untouchable, with the ability to warp reality to kill off wrong doers. He’s power is probably second only to god, at least in the comics.
My Depoweration: I’d be able to dole out punishment, in a less fatal way. IE, a mugger would trip and break every bone in his body, but manage to not kill him. Things like that.
Wow, some of you are much more creative tha I am. I guess what I really wanted was a perfect body to go along with my super brain. (arrogant bastard alert!)
I wanna be the purple hulk! Raarrr!!! Except I can change into my hulk form at will, rather than if I’m angry or under duress.
I would be Logan/Wolverine.
[ul]
[li]I could start smoking again and not worry about any ill effects.[/li][li]I could be a total badass.[/li][li]I could experience the world in the same manner as my dog and therefore bond with him even more.[/li][li]I could go through the rest of my life without having to look for a letter opener.[/li][li]I could become rich by going to parties and bars and making stupid bets . . . “Yeah, go ahead, shove a pencil through my hand . . . betcha there won’t be a mark on me in five minutes.”[/li][li]I could get more hot babes than Tony Stark. ;)[/li]
[/ul]
Best. Power. Ever.
Actually I’ve been reading the Wild Cards novels lately and I reckon if I had to choose from that I’d choose to have the powers of the Puppeteer except without all the evil.
well okay maybe half of the evil
I think you’re wildly underestimating Vegeta. Even pre-Crisis Superman couldn’t blow up a planet, but Vegeta could way back early in the series.
I’d maybe go for the Martian Manhunter, myself. Basically all Superman’s powers plus shapeshifting, invisibility, intangibility, and telepathy. The only real drawback is the critical vulnerability to fire, which explains why the Martians never got very far as a civilization. Heck, even Batman could defeat half a dozen Martians without too much trouble, and Batman has trouble fighting Mr. Freeze. (Hint to Batman: Use warm things!)
So: ditch the pyrophobia, damp back the physical abilities to a reasonable level (i’m thinking here about the cover of Action Comics #1; the ability to heave a Packard over my head, or rip the door to a safe off its hinges). But I’d probably spend most of my time using the shapeshifting, invisibility and flight powers anyway.
Or, heck, why not go for the Brass Ring? Mr. Mxyzptlk is arguably the most powerful character in comics; he basically has the ability to alter reality at will. What would a more limited version of his power be like? Possibly only a limited number of changes can be made within a given time period, or perhaps the changes themselves have to be more moderate in nature (turning a person into a wombat is possible, but turning all people into wombats isn’t).
As you can see, I hate doing things by halves.
Do you need to be a superhero to get that power? I have a Brother-In-Law who’s a cook at Mario’s Frijole Shack…