This show was the Season 3 Premiere. It also marks when Shelly Morrison started being added to the opening credits as a cast member.
When Will explains why Grace's middle name is Elizabeth, he says that her mother loved Elizabeth Taylor. Grace's mother is played by Debbie Reynolds, and Elizabeth had an affair with (and later married) Eddie Fisher whilst he was still married to Debbie. Reynolds and Taylor buried the hatchet years later and eventually worked together on These Old Broads (2001).
Karen makes a reference about Jennifer Lopez and Jack and Grace dance to Britney Spears. Both later guest starred on the show.
There's a missing scene that was taken out before air just before Megan and Debra start to talk about Rosario. It makes a reference to Grace's outfit as "something not even a crack addict would get caught in".
Will greets Jack with the phrase "Hey, lady!" done as a Jerry Lewis impression. Two years after this episode aired, Sean Hayes would play Jerry Lewis in the TV movie "Martin and Lewis (2002)".