From "Vampire Bats and Scaredy Cats" to "Scooby's Chinese Fortune Kooky Caper," all of the title cards for The Scooby-Doo Show featured the gang running across the background to the Mystery Machine. Beginning with "A Menace in Venice," for four episodes, a still shot of the Mystery Machine appears. Starting in The Scooby and Scrappy-Doo Show through the first season of The Richie Rich / Scooby-Doo Show, Scooby, Shaggy and Scrappy are added to the title card, and the music played while the title card is shown was changed. The rest of the title card remained this same image through The New Scooby-Doo Mysteries, with a few subtle changes including the name of the episode's writer being added to each title card beginning with season 2 of The Richie Rich / Scooby-Doo Show. New music was utilized to introduce the title card beginning with The New Scooby-Doo Mysteries.

An episode of iCarly "iBelieve in Bigfoot" parodies the structure of a Scooby episode. When Bigfoot appears at the characters' school, Carly, Sam and Freddy realize that Bigfoot is not real, but rather, someone was dressing up as the creature. Several Scooby-Doo tropes are referenced throughout the episode.

Thank you so much to Bigscoobydoofan ​for coming up with this fun fact idea!

Lennie Weinrib, who was the first voice of Scrappy-Doo, voiced all of these characters in addition to Scrappy:

• Sir Sedgwick (The Haunted Horseman of Hagglethorn Hall)
• The hotel desk clerk (The Phantom of the Country Music Hall)
• Uncle Nat (The Loch Ness Mess)
• Bill Walker (The Neon Phantom of the Roller Disco!)
• The Neon Phantom (The Neon Phantom of the Roller Disco!)
• Mickey Hack (The Fall Dog)
• Gremlin (The Fall Dog)
• Griff (Scooby Roo)

In addition to Sandy Duncan and Cher appearing in both The New Scooby-Doo Movies and Scooby-Doo and Guess Who?, Mark Hamill also has appeared in both series. Hamill voiced Jeannie's master, Corey, in "Mystery in Persia."

"It's Mean, It's Green, It's the Mystery Machine" from What's New, Scooby-Doo? is known for having a numerous amount of animation errors. These include:

• When Shaggy and Scooby are chased by the Mystery Machine onstage, the spare tire falls off the van. However, it reappears in a matter of seconds intact on the van.
• Randy's vest changes color when he tells the gang to find a mechanic.
• When the Mystery Machine traps the gang in the alley, the top and bottom colors switch places before returning to normal.
• When the Mystery Machine makes an appearance at the seance, the top of it is erroneously colored green (instead of blue).
• In the cemetery, Daphne can be seen wearing a purple scarf for a brief second despite not usually wearing one in the series at all.

​Thanks to Ben for pointing out the last of these errors, which I had missed!

The entire plot (and culprit) for Scooby-Doo! Mystery Incorporated "Howl of the Fright Hound" was accidentally released three weeks earlier than it was supposed to be. During Mystery Incorporated's first hiatus, which lasted four weeks, the Crystal Cove Online companion game that was updated every time a new episode aired, was accidentally updated on September 13, 2010 with the "Howl of the Fright Hound" mystery, whereas the episode did not air on Cartoon Network until October 4.

In recent years, lengthy mid-season hiatuses have become common for Scooby. The first ever-mid season hiatus was only two weeks long from October 15, 1983 - October 29, 1983. The hiatus was between the episodes "No Thanks, Masked Manx" and "The Fall Dog" from The New Scooby and Scrappy-Doo Show.

Between 1990-1994, a lesser known comic series featuring only Daphne, Shaggy and Scooby was released in the Look-In magazine in Britain. A total of 136 short two-page comic strips were released.

Thanks Peter for coming up with this week's fun fact!

Several episodes that have not been released in the United States on DVD have been released in other countries.

"Wednesday Is Missing, the only episode of The New Scooby-Doo Movies still unreleased in the US, has been released on the Scooby-Doo Meets the Addams Family VHS in Australia by Worldvision, as well as on the Scooby-Doo and the Three Stooges & Scooby-Doo and the Addams Family VHS in the UK by Lollipop.

The Scooby-Doo and the Werewolves DVD was released only in Europe, and included "Where's the Werewolf?" from The Scooby & Scrappy-Doo Puppy Hour. It's unknown why this was the only villain compilation DVD never released in the US, when all the others were (i.e. Scooby-Doo and the Pirates, Scooby-Doo and the Ghosts, Scooby-Doo and the Skeletons, etc.).

"Scoobygeist," "The Quagmire Quake Caper," "Scooby the Barbarian" and "No Sharking Zone" from The New Scooby and Scrappy-Doo Show were released on 2019's Scooby-Doo: 50 Cartoon Collection DVD in the UK exclusively, replacing "The Chiller Diller Movie Thriller" on the US version.