[on
D.W. Griffith's involvement in
One Million B.C. (1940)] I don't know if he was supposed to direct it or not, but
Hal Roach Jr. did the actual directing. Griffith received producer credit but all he did was sit by the door. He was on the set every day, with an overcoat and a hat, sitting by the truck door--where they bring in the backdrops and large props. He always kept the door open a foot.