Since Death and Aeon Flux were already mentioned (two of my favorites) I would either have to go with Alice from Alice in Wonderland or Ryo-Ohki.
Oh wait…or maybe I could be a MONCHICHI?! 
My nick sez it all. Well, most of it, anyway. I like the Baloo from the Jungle Book, but I prefer the Baloo from Tale Spin. He flies that neat seaplane and works for a boss who (for an anthropomorphic bear, anyway) looks pretty fine and has the voice of Sally Struthers.
And he has a good-natured idiot savant friend (Wildcat) who can fix anything mechanical.
~~Baloo
Scooby: So I could get it on with Daphne in the back of the Mistery Machine.
Well, we’ve got plenty of Hobbeses — Hobbes’es — Hobb —
Well, plenty of people have picked Hobbes, so I guess I’ll refrain from joining the refrain and pick: Tigger!
That’s what Tiggers do best!
Ewww.
Die Fledermaus from The Tick.
Unfortunately he is the most like me. Inflated ego, never in any real danger and thinks he’s suave with the ladies, but actually he’s just a jag-off. It’s the highly inflated ego that makes this livable.
For each medium mentioned so far,
Cartoons - Tenchi - you can’t lose
Comic Books - Spiderman - nifty powers, great wife
Comics - Frank from Liberty Meadows - Cho’s great sense of humor plus babes like Brandy & her roommate
Plus all are sort of quiet and reserved. Never seeking trouble but finding it everywhere. Plus, they are great with the ladies even though they don’t know it.
Quatre Rabera Winner or Zechs Marquize (SP?) from Gundam Wing. Handsome, intelligent, and Royalty.
Me, to a tee. 
Not if I was around. I’d be first one in hand with hose.
Who’d I pick. Maybe Bloom County’s Oliver Wendell Jones. He’s a smart wiseass genius. But people say I’m too much like him for my own good (the wiseass thing).
For animation, I dunno. Too many good choices. Off the cuff, I’'d say Brooklyn from Gargoyles (there’s that wiseass thing going again). Or maybe one of the Warner siblings, Yakko.
I’d be Rollo the Rich Kid from Nancy. I’d get all the gadgets, all the girls, and as a bonus, I’d live in a world where bizarre things occur for the sole purpose of a punchline.
I was gonna say Foghorn Leghorn BEFORE I saw Eve’s answer. Now you can bet I ain’t gonna change it! “Well ah say, ah say boy.”
If not that, being the Phantom (the Ghost who walks) would be pretty cool. And if I could be Peter Parker, “Well hello Mary Jane!”
I get to be Miss Bellum, the Mayor’s secretary who REALLY runs Townsville. She sort of looks like me, too!
I think she should hook up with the Professor-those Powder Puff Girls need a mommy.
WTF, the guy who picks Wolverine as his screen name would rather be Spider-Man? Well, I guess Mary Jane has that kind of charm… 
Sterling: Um, isn’t that a little kinky? (And besides, wouldn’t I have enough trouble with that lady randomly tossing water onto the street?)
Wolverine isn’t even my favorite X-Man. :eek:
Actually the name comes from my favorite football team which as a student I get season tickets for.
Also, the wolverine is a kick ass animal.
Charlie Brown.
I’d love to The Brain, of Pinky and The Brain fame.
Just because I’d love to say, “YES!!” the way he does.
Second choice: Freakazoid!
The Tazmanian Devil! Well, that kinda depends on my mood. My next choice would have to be Terry McGinnis (sp?), better known as the new Batman in Batman Beyond.
Hey, we don’t have a Blossom yet! But I still get to be Bubbles.
Two questions and a response.
*Then who is?
*You go to Michigan? You lucky dog! (Did the kicker live after the UCLA game, or are you guys less fickle than 'SC fans?)
*Yes, yes it is. Them and the bombardier beatle are two of my choices for coolest creations of Mother Nature (them and girls, girls are number one).
Andyman, yep, he was my second choice too. Best dressed girlfriend of all cartoon girls (except Mary Jane during sweeps week), but he has to fight some freaky @$$ villains. At least Bruce Wayne’s enemies are all more or less human (give or take sanity, ubersteroids, and things of that sort).