Oh, these are some of my favorite J2 fics. :)

The Broken Heart is Blind (http://dimeliora.livejournal.com/47943.html): "Jensen Ackles would be on top of the world, rising in the Pileggi organization and put in charge of the biggest deal in years, but all of the accomplishment is tarnished by the loss of his boyfriend Jared Padalecki. Jared broke his heart, left him for the Boss's son, but Jensen is beginning to believe he's not the only one keeping secrets."
In a Little Bit of Trouble (and I'm in Real Deep) (http://jellybean-slash.livejournal.com/241907.html): "Prompt: Big, bad mob boss!Jared knows that his shy accountant and lover is actually an FBI agent. ...Would love a happy ending, minimal angst, focus on Jared thinking Jensen's little attempts at subterfuge are actually kind of cute.”
The Lumberyard (http://archiveofourown.org/works/977096): "Jensen’s a DEA agent who's got some funny notions about sex workers until he falls for Jared, the stripper with a heart of gold. Can they make it work without jeopardizing the major bust he’s been planning for months?"
Fire in the Hole (http://insane-songbird.livejournal.com/183142.html): "At seventeen and growing up in a white supremacist camp, Jared's life is going nowhere fast. He doesn't feel like he belongs, but sees no way out - until the arrival of a new member shakes things up in the paramilitary group. Jared doesn't know whether he should be intrigued or afraid of Jensen Ackles, but when he gets caught in the power play around him coming to a head, he's left with little choice in the matter."
Kiss Me With a Bullet (http://sinestrated.livejournal.com/46787.html) (and sequel, Rules of Engagement (http://sinestrated.livejournal.com/47743.html)): "Jared is a barista at a small coffee shop who promptly falls for Jensen, his newest customer. But Jensen is hiding something big, and it just might have something to do with the mob family across the street."
Underneath it All (http://archiveofourown.org/works/1941900/chapters/4195563): "Jensen Ackles was always good at acting, pretending. So good in fact that he is the FBI’s favorite undercover guy. He has more undercover operations under his belt than he’d like to remember, and after his latest stint with a ring of human traffickers he really thinks he deserves a break.
Unfortunately there’s a new criminal organization on the rise, and all attempts to infiltrate and take down the Padalecki family have failed so far. Which is why Jensen finds himself faced with a new assignment, one that no other agent qualifies for and that he really doesn’t want. Because trying to seduce the most powerful man in the Chicago underworld? Not really high up on his list."

For kidnapping (these are Viking AUs, not organized crime):
Pangur Ban and the Very Friendly Viking (http://archiveofourown.org/works/489392/chapters/853917): "Jensen is a plundering Viking. Jared is a monk who just wants to protect his precious books from the heathen invaders, but Jensen is less interested in the books than he is Jared."
Book Knowledge (http://morrezela.livejournal.com/17833.html) (and sequels, Uncommon Confusion (http://morrezela.livejournal.com/26247.html) and Stepping Stones (http://morrezela.livejournal.com/70017.html)): "Jared is a monk whose village is being invaded and taken over by raiding Vikings. Jensen is a Viking who is out to plunder something a bit different from his usual fare."

Plus a pirate kidnapping fic:
The Sea with its Deepness (http://zuben-fic.livejournal.com/24871.html): "Captain Jensen Ackles was one of the most successful privateers in the Caribbean. Then he encountered the ship captained by the pirate Jared Padalecki, and nothing in his life would ever be the same. Featuring captive!Jensen, stranding on a desert island, ghosts (but no ghost ships), deep, dark caves, and more than one man hell-bent on revenge."

and one based on the Bourne Identity:
The Safety in Lying (http://lostt1.livejournal.com/337807.html): "Take one spy with amnesia and mix in a few guys with guns, a man named Jensen who has some secrets of his own, and a lot of questions with no answers and what do you get? Jason's not sure but that's one answer he hopes to find."

You have made my day and I just want to scream! Thanks for all of this, I will be busy for days and I can't be happier.

Thanks again!

I'm glad! And I have to add, if you haven't read Someone You Might Have Been (http://fleshflutter.livejournal.com/49137.html), you should. It's one of my all-time favorite J2 fics.