Genre-Killer: At least as far as Cartoon Network goes, it did little to encourage further efforts to introduce live-action onto their lineup.
Keep Circulating the Tapes: CN pretty much erased all traces of this show. There used to be uploads on YouTube, but they were taken down and never put back up. As of 2017, the movie at least turned up their on demand service, but so far, that's it.
Old Shame: Notice that CN doesn't even run the movie anymore. It's also no longer on their iTunes store. Safe to say they really feel embarrassed for making this.
Averted, as they recently put the movie back on demand.
Doesn't mean they don't regret it, though, as that's seemingly the only place you can find it other than the original DVD release.
The Other Darrin: In the movie, Golly Gopher is voiced by Paul Reubens and in the TV series, he is voiced by Carlos Alazraqui. Also, Craig and Robin were played by Micah Karns and Eunice Cho respectively in the movie, while in the TV series, they are played by Jon Kent Ethridge and Tinashe respectively.
Undermined by Reality: The film tries to be a live action cartoon, but in doing so, a lot of the gags and deliveries fall completely flat due to not having good pacing or direction, which they might have had if it was fully animated.
On top of that, the setup of Jimmy gaining Milt Appleday's brain can only make sense in a cartoon, as most live action films or TV shows that switch the brains of people acknowledge that, at the very least, that the person who's brain gets switched for someone else's into that someone else's body would be that person. The film tries to handwave this by saying that the doctors were at least able to save Jimmy's "personality gland." Not only is your personality not caused by a gland, which wouldn't be transferable between brains even if it did exist, since personalities are determined by life experiences, gender, and whatever else, but Milt's brain wouldn't be able to come back to life after decades of being dead in a cooler. Not only that, but the accident that lead to Jimmy needing the brain transfer is so contrived, with the train hitting him, causing him to go flying rather than being ran over. Plus, the train wasn't even going that fast, so that makes no sense to have happened.