Eric Dane

ABC

GREY'S ANATOMY Eric Dane as Dr. Mark Sloan and Brooke Smith as Dr. Erica Hahn star in the episode "Physical Attraction... Chemical Reaction" - George and Izzie's romantic chemistry is put to the test, as Derek asks for more than a physical connection from Meredith; much to his own surprise, Mark develops a crush on a fellow surgeon, and Callie's role as Chief Resident is placed in jeopardy after she delegates much of her job to Bailey. Airs Thursday 8, November, 2007.