It would be tough for any actor to appear in two Broadway productions at the same time, much less one who is 79 years old.
Knoxville's own Emmy award-winning actor John Cullum is doing just that, as noted by National Public Radio in a feature last weekend. Cullum plays the patriarch in August: Orange County with a 7:35 p.m. curtain. He is in the first 15 minutes of the play, his disappearance setting up the action for the remainder of the play. Then he hurries down 45th Street in time to make the 8:30 curtain for the play Heroes.
Cullum gained national fame on television shows like Northern Exposure and ER, but has been a Broadway actor for 50 years. He told the interviewer that as a young man he studied finance and if he'd stayed in Knoxville another six months, it's likely he would have gone into his father's real estate business.