Since the great success of "2001", Dullea has had difficulty reproducing a similar success on film, though he has had a long and successful career on stage in New York City and in regional theaters.
Since the great success of "2001", Dullea has had difficulty reproducing a similar success on film, although he was a regular vocal performer on CBS Radio Mystery Theater, which ran from 1974 to 1982. Dulles has also had a long and successful career on stage in New York City and in regional theaters.