Patrick Galen Dempsey (born January 13, 1966) is an American actor and race car driver. He is best known for his role as neurosurgeon Derek "McDreamy" Shepherd in Grey's Anatomy. He had early success as an actor, starring in a number of films in the 1980s, including Can't Buy Me Love (1987) and Loverboy (1989). In the 1990s, he mostly appeared in smaller roles in film, such as Outbreak (1995) and television. Dempsey was also in Scream 3 (2000) where he played the role of Detective Mark Kincaid. He was successful in landing a lead role in Swe…