Frasier mentions plans to visit Nantucket. This was actually a reference to him (and Lillith) making a crossover appearance on sister series Wings, which originally aired immediately following the Cheers episode.
Kevin Sorbo is one of the extras in this episode, he can be seen sitting at the bar as one of the patrons.
First episode to have Cliff wear a new uniform.
Because of the expired liquor license, Rebecca and Carla serve non-alcoholic beer to the guys while they play poker in the back room. For the run of the series, non-alcoholic beer was served in place of real beer on the set.