These movie tough guys are the toughest of the tough, so keep walking, pretty boy.

449633761- For this month's over-the-top Shoot 'Em Up, the typically furrow-browed Owen ditched his trademark heady, macabre roles in favor of a gangbusters action-comedy flick. Playing the unlikely hero Mr. Smith, Owen is a man with no last name, no identity, no home, and about 15,000 different methods for putting a bullet in someone's brain. With an orphaned infant thrust upon him, a sexed-up prostitute in tow, and a seemingly endless supply of foes hot on his tail, Owen's Smith smoothly locks, loads, and kills everything in his path.

449633792- Paul Rudd pretty much nailed it in the 40-Year-Old Virgin: "I used to think Matt Damon was a Streisand, but he's rockin' the shit in this one." Damon surprised everyone by turning in a neck-snapping performance that was a long way from Good Will Hunting. Bourne doesn't know his own name, but he can instantly recall 80 different ways to mess you up.

449633807- The guy looked like the entire Vietnam War was being waged on his face. Barnes just oozed the kind of slow-burning menace that you see in tigers at the zoo. That look that says, "Keep waving, dough boy. If these bars weren't here, I'd be shitting out that oversized souvenir shirt." Even in a place as unholy as the 'Nam, this guy was a bastard.

449633864- Begbie didn't shoot up like his junkie pals—his drug of choice was pure booze-fueled rage. Hell, you didn't even have to look at him funny, just dare to get in the way of one of his errant pint glasses and you'd soon find yourself on the business end of his knuckles…or a pool cue, if he happened to be a touch hungover that day.

449633852- The best feature on this snarky boulder of a man is his mouth. Blain spews the kind of cocky, fearless talk that could inspire anyone. When fighting an unknown creature in the jungle, having a guy who "doesn't have time to bleed" by your side is sure to ease your worries. But if it doesn't he's always willing to share a plug of ("sexual tyrannosaurus"-making) tobacco instead.

449633834- He may be crazier than a shit-house rat, but Durden is nothing if not committed to his anarchist ideals. Willing to beat himself (and others) to a pulp, willing to blow up entire city blocks, and—when his internal identity struggle gets to be too much—willing to shoot himself in the face and still carry on a conversation. Tell us, what have you done?

449633893- The toughest guys are usually the ones that start out the quietest. Big Chris doesn't like hassle when he's collecting debts for the local crime lords, and won't tolerate foul language (especially from his son, Little Chris). But push him too far and before you know it, your head is being slammed into a car door. Like the man himself says, "It's been emotional."

449633908- A man so tough, every prisoner in the New York maximum security penitentiary has heard his legend. Snake is a war hero, criminal, and enough of a loose-cannon that even seasoned ass-stomper Lee Van Cleef has to keep a loaded pistol handy just to have a conversation with him. "It's the survival of the human race, Plissken. Something you don't give a shit about."

449633930- Badasses aren't really known for their acts of kindness, but then again, few of them equate "helping a poor blind girl" with "taking on the entire Hong Kong Triad organization." Ah Jong lets his endless stream of bullets do the talking for him, and they make his point pretty concisely: "Mess with me, and you'll have more lead in your ass than a DMV clerk."

449633948- In a city where prostitutes routinely behead johns and the Cardinal keeps a pet cannibal, Marv is the one guy even the locals are afraid of. A Sherman tank in a trench coat, the big lug shrugs off anything you can throw at him. Ram him with your car? Please. Shoot him? Gotta try harder than that. Slash him with your razor-sharp claws? No problem, he's got plenty of Band-Aids. It's no contest: Marv is the unstoppable tough guy.