The 1986 TV show:
- Recycled Script: The episode "Endangered Species", is about a wolf child turns out to be the heir of a murdered co-owner of a company, and the other co-owner wants to finish the job. It was recycled, almost scene for scene, from an episode of Manimal called "Female of the Species". And then the script was recycled AGAIN in 1994 for an episode of Thunder in Paradise, also titled "Endangered Species". The same writers - Michael Berk and Douglas Schwartz - are credited for all three shows.
- What Could Have Been: Had the series made it to a second season, H.E.N.R.I. the robot would have become a regular. The Wizard fansite has drafts for two episodes that would have been written, and H.E.N.R.I. is prominently featured in both of them. He might have even been intended as a replacement for Tillie; she is not in the finale, and neither draft mentions her at all.
- Written by Cast Member: David Rappaport helped with "Trouble In The Stars", getting a "Story By" credit in the intro.
The 1989 film:
- Accidentally Correct Writing: They correctly pronounced Ninja Gaiden as Ninja Guy-Den (as opposed to Ninja Gay-Den).
- Defictionalization: This movie was the loose inspiration for the Nintendo World Championships.
- Misblamed: Some blame the cheesier parts of the movie on Nintendo, since it seems an awful lot like a 100-minute Nintendo commercial, but Nintendo actually took a rather hands-off approach to the creative decisions. The vast majority of the Executive Meddling leading to a Troubled Production was from Universal.
- Missing Trailer Scene: There's a couple of scenes in the trailer that didn't make it into the movie.
- Old Shame: Jenny Lewis considers her involvement with this movie to be one, particularly after she established herself as the lead singer of indie rock group Rilo Kiley. In an interview from 2003, Lewis described The Wizard as something that she wished people would stop asking her about, noting "That's cool and all, and that was fun, but it just gets like, a bit annoying because I feel like I have more interesting things to say." In an "Interview Magazine" piece where she interviewed her Postal Service bandmate Ben Gibbard, Lewis noted that early in Rilo Kiley's career, several bookers at indie rock clubs gave the band a lot of grief because she was the star of The Wizard, which shaped her feelings of the film as an adult.
- Throw It In!: It's pretty obvious that Jenny Lewis and Fred Savage cracking up at the end of the scene where she kisses him was not scripted.
- Unintentional Period Piece: It will forever be a symbol of the time when the Nintendo Entertainment System was the dominant force in video games, featuring many of the games that were popular at the time, a scene where the kids call the Nintendo Power hotline for game tips (Nintendo Power ceased publication in late 2012), and the final challenge of the movie being SUPER! MARIO BROS.! 3!