Every girl who's ever heard of Wicca worships McMahon for his turn as a bad-boy demon on Charmed. But his role as an immoral plastic surgeon on Nip/Tuck is what landed him in celebrity magazines. The son of a former Australian prime minister, McMahon initially put his powerful blue eyes and chiseled chin to work as a model. He segued to soaps in the early '90s and graduated to prime time with a part on Profiler. A bit of a lothario in real life, his marriages to singer Dannii Minogue and Baywatch beauty Brooke Burns both ended in divorce, and his relationship with Charmed costar Shannon Doherty fizzled just as his career heated up.