As Margaret is flipping through the records in the basket and describes them as "David Cassidy, Shaun Cassidy, David & Shaun Cassidy," one of them is actually Crosby, Stills & Nash's Daylight Again, as evident from the back cover.
Katie says that Roger sells Yugos. The episode takes place in 1984, two years before Yugos were sold in the United States.
When Rick goes back onto the dance floor, he says, I'll be back! This was clearly in imitation of Arnold Schwarzenegger in the Terminator and later movies. Yet the Terminator was not released until October of 1984, while this is set about six months earlier.