Mark Harmon, who is known for his role as Gibbs in NCIS, looks completely different in a throwback photo from his 1981 TV movie Goliath Awaits. In the film, Harmon plays the role of Peter Cabot, a scientist who discovers survivors and descendants on a sunken ocean liner. The movie also stars Christopher Lee and Eddie Albert. Harmon has had a successful acting career, appearing in shows like The West Wing and JAG. He recently left NCIS but is still involved in the franchise and is reportedly working on a book.