Here, in keeping with the holiday spirit, is a Christmas-themed TV show featuring the one dramatic role Harpo Marx ever played before cameras. It's the December 22, 1960 episode of The DuPont Show with June Allyson, an anthology series that featured a wide array of stories and specials. Harpo, who many folks thought was actually a deaf mute, plays a deaf mute. Reportedly, the child in the opening scene — the first one to notice the dead man — is Harpo's son, Bill.
I can't recall if I mentioned it before or not but there's a great DVD set coming out shortly of all the odd appearances that the Marx Brothers made on television. There were not only more than you thought, they came up with some that I, an alleged expert on the brothers, didn't know about. In fact, they have so many that it may turn out to be two boxed sets if the first sells as per expectations. Last I heard, this was not on the one that will be announced any week now…