There's one whimsical moment here that's very quiet and could get lost. After DiMaggio sits down, panelist Arlene Francis notes the ovation and says, "Nobody's ever had a hand like that other than Eisenhower and Monroe" -- which gets a reaction from DiMaggio since he and Marilyn Monroe were married at the time, September, 1955. (Though just barely, since the would divorce the next month.
This is the full broadcast. If you want to jump to the Mystery Guest segment directly, go to the 17:30 mark.