Riding on Air (Edward Sedgwick)

QUESTION: Which of the following actors never made the switch to directing?
A)  Mel Gibson
B)  Brad Pitt
C)  George Clooney
D)  Ben Affleck

During the old days, the credit roll for films was very short. It often included the heads of departments - lighting, sound (at least after talkies came to be), writing, things like that - but few of the assistants.  Of course, directors and producers were prominently announced, and the director for Riding on Air was Edward Sedgwick. His resume was quite impressive, not only as a director, but also as an actor. 

Edward Sedgwick, Junior was born in 1889, a native of Galveston, Texas, to a family of vaudeville performers. He was only four years old when he became an active member of the Sedgwick Comedy Company, singing, dancing, and doing whatever was necessary during the summer months and, naturally, attending military school during the colder months. He reached the rank of first lieutenant by the time of his graduation, at which point he had to decide whether to continue in the army, or become a professional performer. He chose the latter, and remained in the family business until his father's illness compelled him to star in silent films alongside his good friend Buster Keaton. He also directed many of Keaton's MGM films, talkies mostly, while also directing other comedies, notably for our purposes those of Joe E. Brown. But his popularity waned and, by the early 1940's, directing opportunities began to dry up. He got small jobs on television shows until his death by heart failure at the age of 63. 

ANSWER:  B)  Brad Pitt