Born in December 1962 in Memphis, Tennessee, he is an American actor best known for his roles in science fiction television series. He gained significant recognition for portraying John Crichton in "Farscape" and Cameron Mitchell in "Stargate SG-1." He studied at Furman University and later attended the Central School of Speech and Drama in London. His career extends to theater, film, and television, where his charismatic performances have earned him a dedicated fan base.