11/30/2009 at 01:00 AM EST
"I won't mention Simon's hair because frankly I'm sick of speaking and hearing about that man's hair. Hair does not make a man sexy. I will say that Simon has a fantastic smile, and the reason that it melts the hearts of so many is because it's genuine. Simon likes to have a laugh; his grin is effortless, and as a result infectious."
—ROBIN TUNNEY, his The Mentalis
"Matthew's appeal starts with his Texas charm and his passion for life. He's kind, adventurous and lives his life to the fullest every day. Now that he's a dad, all of those qualities have just magnified. And when he takes his shirt off, which is pretty much always, even if you try not to, you just can't help but look."
, his Fool's Gold
"David is a wonderful husband. He is kind and incredibly romantic. He is a brilliant sportsman and an amazing father. He idolizes our three boys, and this is what makes him 'the sexiest man alive' to me."
—VICTORIA BECKHAM, wife
"Patrick has the ability to convey sensitivity and vulnerability. Mix that with his impish twinkle, and women are toast."
—AMY ADAMS, his Enchanted
"Will exudes charm, beauty, humor, intelligence, discipline and sensuality. He's a fine specimen of a human."
—ROSARIO DAWSON, his Seven Pounds
"He's got a mischievous glint in his eye that lets you know he's up for anything.
—ELIZABETH BANKS, his W.
"Obviously he's very great looking, but he also has a great personality. He manages to be manly while still being sensitive. As a woman, he makes you feel very attractive. When you're around him, he's always like, 'I love your dress.'"
—HEATHER GRAHAM, his The Hangover
"He's got mad confidence. I was a huge fan of 300
. He was such a stud muffin in that film; then when I worked with him, I was pleasantly surprised by his very boyish nature. He's not jaded. He loved working, and he was just enthusiastic and happy to be there. I find that very attractive. I don't like much attitude on a guy."
—BREE TURNER, his The Ugly Truth
"Jake is the kind of guy who can do a spot-on impression of someone you work with that will make you giggle. He knows home remedies for distressed hair. He can build a cabinet from scratch. He plays guitar and has a great voice. Kids and dogs love him. He loves his mom and sister and girlfriend. He's perfect. Too bad he's ugly."
, his Brothers
ROBERT DOWNEY JR.
"Robert has a way of making everyone around him feel very special and comfortable. Whenever I see him, I walk away smiling. Those beautiful brown eyes may have something to do with it.
—MICHELLE MONAGHAN, his costar in the upcoming drama Due DateGEORGE CLOONEY
"There's sort of a mischief behind his eyes, and then the laugh lines highlight that. I remember meeting him. Instantly you feel like you become his best friend in that moment, and it's genuine. He extends himself. He has an open heart, and that's really lovely."
—VERA FARMIGA, his Up in the Air
"Ashton has a great smile. He's got a really sweet, playful, boyish charm. If you ask all of my girlfriends what their favorite trait is in a guy, they'd all say sense of humor. Yes, Ashton is intimidatingly handsome, but he's also disarmingly funny. It's the perfect combination."
, his costar in the upcoming Valentine's DayMATT DAMON
"Kindness and generosity are very sexy, and Matt is warm and welcoming. He loves his job so much, is so prepared and having such a good time, that it's impossible to not feel happy working with him."
—MELANIE LYNSKEY, his The Informant!
Lenny has a way of looking deep into your eyes and touching your soul, but I wish it was my butt.
—SHERRI SHEPHERD his Precious
"He's funny, attentive, intelligent. And if you went out to dinner with him, he's not one of those guys who would judge you if you ate a lot."
—TINA FEY, his 30 Rock
"You don't have to deal with whatever it implies to be Brad Pitt
. He's very relatable. He's nice."
—DIANE KRUGER, his Inglourious Basterds
"He's the only person I've met who can use words like 'propulsive' casually in a sentence and make it sexy."
—REBECCA HALL, his costar in the upcoming The Town
"Ryan is a really good man. He's really loyal, very trustworthy, and he can keep a secret. And he's got the sickest mind. His mind is a dark, scary place.
, his The Proposal