When D.J. tells the family that he wants to see Princess Leia in a bikini, his grandmother (played by Debbie Reynolds) smacks him. Princess Leia was played by Carrie Fisher, Debbie Reynolds' daughter, who is also one of the writers of this episode.
Carrie Fisher is one of the writers of this episode, and her mother is Debbie Reynolds, who is the actress playing Dan's mother.
During the fight scene between Roseanne and Audrey, Roseanne landed on Debbie Reynolds so hard that Debbie actually broke a rib. Debbie Reynolds kept performing and didn't even tell her costar about the accident until years later.
Debbie Reynolds took over the role of Audrey Conner from Ann Wedgeworth who played the first Audrey Conner in the second season.