The actor, 36, who's as serious about his work as his eco-causes, apparently developed that no-nonsense attitude early in life. "I was a real punk," he recently told Rolling Stone of his childhood. "I would talk back to anyone and be up for any fight."
... OF HIS EYES AND HIS SMILE
The A-Team star was impressed by the pumped-up body that resulted from his workouts for the summer blockbuster. "I was like, 'This cannot be me-that's the way I look?'" Cooper, 35, told Details magazine. "As a kid I only fantasized about looking that way."
... HIS TALENT KNOWS NO BOUNDS
After bringing sexy back to music, he now delivers it to movies. "I know what I want to be," the Social Network (and upcoming Bad Teacher) star, 29, told ENTERTAINMENT WEEKLY, "and that's an artist."
... HE'S BRAWNY AND BRAINY
ROBERT DOWNEY JR.
When he's not in comedy mode-like in the fall film Due Date-the actor, 45, veers between his "Beefcake Charlie status" (as he described his Iron Man 2 physique to Entertainment Tonight) and playing the "skinny Brit" genius in the Sherlock Holmes franchise.
... HE EMBRACES HIS SENSITIVE SIDE
Exposing his bulked-up chest in Prince of Persia and leaving almost nothing to the imagination in Love and Other Drugs, the actor has had a revealing year. "I think a true leading man has both strength and vulnerability," says Gyllenhaal, 29.
...EVERY ERA LOOKS GREAT ON HIM
On Mad Men he's the epitome of slicked-back cool, but what's his go-to style in real life? "Jeans!" says Hamm, 39. "Jeans and a white T-shirt are my default look, and I use that word 'look' very loosely."
...HE'S AS SLEEK AS HIS DESIGNS
What's the sexiest piece the designer, 49, has ever created? "Oh, that's hard. The notion of what's sexy changes. At this moment I'm more into sensuality than I am sexuality."
...HE PUTS HIS KIDS FIRST
The actor, 42, is helping his kids-like Karate Kid star Jaden and "Whip My Hair" singer Willow-realize their dreams. There's a "burst of possibilities of what we can do ... as a family," he told Oprah.
...HE STILL ROCKS THE SCRUBS
The Grey's Anatomy star-who's married with three kids-works at keeping his marriage McSteamy. "You have to be spontaneous," says Dempsey, 44. "You have to have a loving, physical relationship." So how does he keep the romance burning? "We had a wonderful anniversary this year. We were in Chicago, away from the kids, and we had a beautiful experience. I won't get into the details because that's for us."
...MILLIONS OF TEENAGE GIRLS CAN'T BE WRONG
This year the debut of Twilight: Eclipse reignited the frenzy surrounding the 24-year-old heartthrob. Luckily, Pattinson's getting used to all the hysteria. He told Parade magazine, "When it happens so often to you, you kind of actually look at people's faces and see that they're enjoying themselves, and it makes everything so much easier to accept."
...HE'S THE RAPPER-NEXT-DOOR
The singer-whose 2010 album Thank Me Later debuted at No. 1 on the Billboard charts-doesn't play his own music during romantic situations. "Nah, that's super awkward," says Drake, 24. "But I have a playlist obviously. It's called 'Buff the Stuff.' It's got, like, Sade, Aaliyah, old Outkast."
...HE'S THE WHOLE PACKAGE
If you're a big Morrison fan, make sure to watch Glee this winter. "Body-wise, I get into my best shape around the middle of the season," says the song-and-dance man, 32. "Just like most athletes."
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