SYDNEY Australian actor Julian McMahon , known for his roles in television series " Charmed " and " Nip/Tuck ," has died in the United States from cancer at the age of 56. His wife, Kelly, announced his death on July 4 in a statement to the website Deadline. Born in Sydney in 1968, McMahon initially worked as a model before moving to acting in television, first in Australia and later in the United States. He made a name for himself playing Cole Turner, a demon in the fantasy television series "