15+ Amazing images of Terry Oquinn. Known for voicing professor mystery. Terrance quinn (born july 15, 1952), known professionally as terry o'quinn, is an american actor. See a detailed terry o'quinn timeline, with an inside look at his tv shows, marriages, children, awards & more through the years. Terry is most famous for playing john locke on the tv series "lost". Actors from the tv series 'lost' have revealed how the shooting of its final episode almost cost people's lives.
