My favorite undergrad professor was Bobby Spradlin. He looked like Dick Cavett and had a wonderful wit. When I was in law school, I interrupted his dinner at Highland Park Cafeteria one evening and he was very gracious and friendly.
My favorite law school professor is Roy Anderson. He, too, has a great wit and sense of humor. One time while leading the class through a particularly difficult area of Contracts – might have been a discussion on consideration – he paused and said, Once more into the breach! I thought that perfectly captured the general sense of confusion that the class labored under at the time – but we got through it!