Poultrygeist is also pretty fun, but it kinda suffers in the same way that Return to Nuke Em High does in that it feels like there's a bit too much fat and it goes on a little too long. Many of these are on Netflix, too.
re: car flip
"Sgt. Kabukiman N.Y.P.D. is perhaps best known for its car chase scene that happens midway through the film where several carloads of gangsters chase Harry Griswold, wearing a clown costume, through the streets of Jersey City, which climaxes when one of the cars, a blue sedan, strikes another vehicle, flips upside-down 30 feet in the air, lands, and then inexplicably explodes. Five years later, exactly the same footage was used in a scene in Tromeo and Juliet for not only being cost-effective, but also because Kabukiman had yet to be widely distributed on video (and thus brought some confusion as to which movie the footage originated from).
Despite obvious continuity flaws, Troma has managed to fit in the same footage into each of their films as a tongue-in-cheek homage, including Terror Firmer, Citizen Toxie: The Toxic Avenger IV, Poultrygeist, and Return to Nuke 'Em High Vol.1."