So you hear this question asked to famous people all the time. If you hadn't become an actor, musician, etc, what would you be doing for a living. My list of alternate career paths for Dana include:
1. Politician ( mayor of Chicago perhaps)
2. Pitchman for exercise equipment infomercials
3. Used car salesman( complete with short sleeve shirt and tie)
What say you UG? 
Fuckin fired
BlackJack Dealer at Station Casino:
"So you want a hit on a fcukin' 19 ?!?!?"
XxLiveBaitxX - BlackJack Dealer at Station Casino:Legit Lol! Nice one
"So you want a hit on a fcukin' 19 ?!?!?"
I'm afraid creepy yogacise instructor is the best he could hope for.
http://www.youtube.com/watch?v=BuKu2exx8xQ
Lol @ used flesh light salesman!! 
Yelling orders at waitresses at the waffle house.
"Do you wanna be a fucking server?!"
Its obvious, He'd work for Eggland's Best®, ya goof.
boxing promoter
Unemployed
TFK_BOZY - Still managing fighters.Obvious correct answer, and still well known among MMA fans
He'd own an egg company, ya eggs
Well the original plan was for him & Lorenzo to do something together in boxing soo.. boxing promoter
He's one hell of a promoter, he's destined to be involved in combat sports one way or another
MRXC - He would be the same thing he already is, just in a slightly different capacity.You wanna fuckin Vote Up ya fuckin egg brain!
A UG poster.
'I bench 3 bills you goof, been boxing since I was young, school'd tons of these MMA fu*ks that ran up on me in the gym. I spar 100% and these punks get left laying. MMA is like the WWE you gotta have some act, gotta be some french goof, or some mexican dude. If it was real, no weight classes, no rules, no rounds.... I'd be the Champ.'
I assume without all the formal training and reprimands he's had over the years there would be more sexist and homophobic diatribes mixed in, i just don't have the necessary natural ignorance to mimic it.
A virgin.
(Thanks peter crouch)
Ttt
pro boxer
A Union garbage collector.
One of those hacky corporate motivation and re-structuring speaker types that yells platitudes and metaphor laden business slogans at people like "You gotta get after the shark!". Then someone who's job he eliminated would shoot him in the parking lot.
That or a coke dealer. Also shot.
The end.