This is the first of the "alternate reality" or dream episodes, something that the show became famous for later on.
Pat Morita, who guest starred in this episode, also starred in Happy Days with Tom Bosley and Anson Williams. Pat played the original owner of Arnold's.
In this episode, Alex Désert, playing a beat poet, says the line, "Clearly, I am the hep cat." Désert is the singer/songwriter for the band Hepcat.
Tom Bosley played Mel McFadden the grandfather of Marvin McFadden on One Tree Hill. Lee Norris who played Marvin McFadden also played Stuart Minkus on Boy Meets World.
Towards the end, Cory says, "It's 1957. There is no microwave." The Microwave, however, was invented in 1946, but it wasn't until 1967 that microwaves were available for home use.