Complex sentence: He also appeared in four "That 70s Show" episodes as Charlie, and in "The O.C." as Danny, Seth's rival; he had a dramatic guest role on' as "Sam Cavanaugh", a young victim of sexual abuse.
Split into simpler sentences: He also appeared in four "That 70s Show" episodes as Charlie, and in "The O.C." as Danny, Seth's rival. He had a dramatic guest role on' as Sam Cavanaugh, a young victim of sexual abuse.