What makes a man sexy? One part mischief, one part adventure, one part danger? Although there's no mathematical equation to provide an answer, we sure know him when we see him. Movie-star looks don't hurt, but it's what's simmering below the surface that really turns us into quivering jellyfish. In the case of Ben Affleck
, "there's nothing sexier than a smart, funny, generous man who puts others before himself," says his director pal Kevin Smith. Joining Ben—a trove of men you'll want to get to know better.