Grissom from CSI Las Vegas, because he's just so smart and a bit complicated, and that makes the character pretty sexy
Andrew Zimmerman, who is this short little dude with a bald shaved head who goes around the world devouring weird and often gross ethnic delicacies... I LOVE THIS SHOW!!!! And he's just so charmingly foodie and nerdy, and obviously also pretty damn smart. Bizarre Foods with Andrew Zimmern: Food, World, Travel: Travel Channel
Woody Harrelson, who is simply HOT. If you haven't seen Palmetto, you should.