Prince was a guest during the filming. He was a former boyfriend of the actress Jackie Swanson who played Kelly Gaines Boyd. Jackie worked with Prince on the video Raspberry Beret. Prince was also friends with both Jackie Swanson & Kirstie Alley.
Cheers regular Phil, Philip Perlman, can be seen whenever the kitchen doors are opened as being one of the wedding guests.
At one point Sam goes down to the cellar. In all previous episodes except for one, this was a "broom closet". The only exception had been a Halloween episode in which there is a hidden staircase in a dream. This is the only episode in which the broom closet is also the entrance to a real cellar. There is one other oddity about the closet. In on episode during the forth season one of the bar patron extras inexplicably went into the closet as part of the random background action.
Milo O'Shea also played a couples therapist who sub-let an office from Niles Crane in Frasier 'Shrink Rap' (1995)