From 1931: It's Jack Benny in a ten-minute short subject called Taxi Tangle. Benny's early film appearances are interesting because he was just beginning to develop his stage/screen personality — the cheapness, the clueless vanity, the expertly-timed exasperation, etc. He had a nice film career from the moment movies could talk but he really didn't become Jack Benny until the radio program.
The guy playing the cab driver in the beginning of Taxi Tangle is Tammany Young, a one-time supporting player in silent comedies who went on to countless bit parts in talkies, including roles in almost any movie that starred W.C. Fields. Hal Roach once told me that when talkies came in, only about 15% of the actors who'd appeared in silent films were able to make a transition and still have real careers. Young was among that 15%, though he rarely got much more dialogue than he has in this short.