Ed McMahon has a brief guest role in this episode, but not as himself. He plays Frank Tuttle, a local businessman who is a guest on "Vermont Tonight". He witnesses Dick Loudin standing up to Don Prince and calls him "a monster" to huge audience applause.
Don Rickles was actually very good friends with Bob Newhart in real life.
The title is based upon the title of Eugene O'Neill's play 'The Iceman Cometh'.