In this episode, Sam recalls that Frasier had told him that his dad was a dead research scientist (which had happened on an episode of Cheers
years earlier). This inconsistency is explained by Frasier saying that he and Martin had a fight before Frasier made that statement to Sam. See more
Martin tells Sam he remembered once seeing him pitch at The Kingdome. The Mariners, who played at the Seattle Kingdome, didn't come into existence until 1977, and on Cheers it was established that Sam's baseball career ended sometime before that year. See more
What the hell you do mean, you were about to get married?
All right, all right. Uh, well, I met this girl six months ago, and we were supposed to get married. And yesterday, I was standing in this church facing this minister, and I hear him say, "Will you take this woman to be your wife?" and I said, "Who, me?" Well, the next thing you know, I'm running down the aisle and I didn't stop running until I got here.