Trivia: The Simpsons holds the record for most guest stars; it is also the only non-variety show to have had appearances from three former Beatles (Paul, George and Ringo).
Trivia: When the Quirks uses their noses to play a song to get rid of Koopa for good, they play the theme song from the video game The Legend of Zelda.
Trivia: The original video releases of the early 1990s include a handful of scenes that are not present on the recent DVD releases.
Trivia: During the final 2 seasons of Saved by the Bell, most notably the season with Tori and the one following it, look for actor Casper Van Dien in the background of some episodes. He appeared in many scenes throughout the final 2 seasons as a random background extra, most notably in the locker hallway scenes. This was before he made it big in Hollywood.
Revenge of the Evil Leaper - September 16, 1987 - S5-E17
Trivia: Thames, the third leaper, leaps in and out of scenes using the Star Wars blaster sound effect.
Trivia: Jaleel White broke and permanently disfigured his right-hand pinky finger while filming this episode.
Trivia: Poirot in the ship's lounge is reading the actual May 1st 1935 issue of Bystander (recognizable by the cover and with the correct page order, does not seem to be a simple movie prop), roughly consistent with the time frame of the first season and a contest taking place on the 14th. (00:07:50)
Trivia: At the beginning of this episode, after the Crypt Keeper causes the mirror to break, he mentions that he just bought seven years of bad luck. This show lasted for seven years.
A Father and Son Reunion - S3-E21
Trivia: Paul Dooley and Jerry Van Dyke play father and son in this episode. In real life, Dooley is only three years older than Van Dyke.