This episode is one of only two occasions where the Brains tampered with the audio of the film they watched. Michael J. Nelson later wrote that, in retrospect, these edits "were quite stupid."
The demon dogs are made out of a Masters of the Universe toy known as Battle Bones, which have been painted red. The original toy was white.
The "airbag helmet" that Joel presents during the invention exchange came from his stand-up act.
This episode features the first installment of the Commando Cody serial.
For the graveyard scene one of the robots asks who is buried in Peter's grave, and the other robot answers that it's James Arness. Many people don't realize that Peter Graves (Mission Impossible) is the real life brother of James Arness (Gunsmoke).