Gareth Williams, the sauve, salt-and-pepper-haired actor, got his start in NYC studying with Uta Hagen. He was in a bunch of local productions before landing the role he's most famous for: Mike Potter of Dawson's Creek in 1998. Since then, he's had roles in countless other shows and movies, from Volcano to Law and Order. Our favorite glimpse of Gareth? In The Cell, a Jennifer Lopez thriller about a serial killer in a coma. He plays an abusive husband clad in nothing but his underwear. It's a slightly terrifying scene, but he looks terrifically good.