Connections

"If I Only Had a Brain"

Christopher Lloyd (known as Dr. Emmet Brown in Back To The Future films) plays a character called Roscoe Joyce. His son, who died in 1985, comes to visit him from the past. Not only is there time travel theme in this episode, but the year 1985 is the present time in Back To The Future films

When Walter Bishop puts his red/blue glasses, he mention that they were created by an old friend of his, "Dr. Jacoby from Washington state". This is a reference to the character "Dr Jacoby" from "Twin Peaks", who can be seen during the show wearing the same iconic glasses. The events in Twin Peaks occur in the state of Washington.