Muddy Mudskipper is a parody of the old Hanna Barbara cartoons.
Originally, the microphone was planned to go into Stimpy's mouth at the end of part one. Nick executives said it was too sexual so the scene was animated with the microphone going into his nose instead. The microphone in the mouth was never animated.
Over the first shot of Hollywood, the head that rises up and down from out of nowhere is a caricature of John Kricfalusi's favorite actor, 'Kirk Douglas'.
Among the many other animation mistakes in this episode, the reason that Ren has black eyelids is because the Korean animators had never worked with character designs like theirs before. "They didn't know what Ren was." Kricfalusi recalled "They thought they were his eye brows or something."
The music heard under the Gritty Kitty commercial sequence (at the supermarket with Stimpy and Mr. Horse) the underscore is "Stop Gap".