The final number was always a group sing along with the regular cast. But among the cast was always a celebrity not known for great singing, uncredited, dressed like the others, sometimes hard to recognize. He was always in the crowd, the camera would pick him out and move on. Johnny Carson and Jerry Lewis were among these. Lewis actually can be seen slipping and falling, aggravating an injury he had suffered before.
During the show's first season, the NBC series aired on alternate weeks with The Bell Telephone Hour (1959).
During the sing-along segments, the song's lyrics are captioned at the bottom of the TV screen. A long-running myth claimed the series' sing-along segments also had an animated ball instructing home viewers the lyrics. Animator Max Fleischer introduced the "Follow the Bouncing Ball" in his animated short films in the mid-1920s.
Reruns of the series, which was canceled in 1964, aired on NBC in the spring and summer of 1966.