- He Also Did: The Goosebumps writer created a preschool show about medieval Muppets. Who knew?
- Keep Circulating the Tapes: The show has had only three VHS releases in its lifetime, and they don't have all the episodes on them. The show was never released on DVD, nor on iTunes, Hulu, Netflix, or Prime Video. Because of this, full episodes of the show are hard to come across outside of YouTube uploads. Not even The Other Wiki lists all the episodes.
- The Merch: Pizza Hut once did a tie-in with the show that consisted of finger puppets of Eureeka, Magellan, and Batly.
- Name's the Same: Quagmire is also the name of Quahog's resident pervert.
- Playing Against Type: When you think of a horror book author, this would probably be the last thing you would expect. (Although he actually started his career as a humor writer, he already had at least a few horror books under his belt by this point.)
- Real-Life Relative: In the Mexican Spanish dub, Eureeka and Magellan's voice actors (Rocío Garcel and Jorge Roig) are married in Real Life. In the same way Quagmire and Eureeka's voice actresses (Rocio and Sylvia Garcel) are sisters as well.
Trivia / Eureeka's Castle