1980’s Alligator begins in 1968.  While on vacation in Florida, a teenage girl named Marisa Kendall purchases a baby alligator named Ramon.  When she returns home to Chicago, her jerk of a father flushes Ramon down the toilet.

12 years pass.  Marisa (Robin Riker) becomes a herpetologist.  As for Ramon, he actually survives being flushed down the toilet and thrives in the sewer.  He eats the carcasses of animals that had been a part of an experiment involving a growth serum.  The serum had the desired effect of making the animals bigger but it also increased their metabolism to the extent that they became aggressive and had to eat constantly.  Evil industrialist Slade (Dean Jagger) is convinced that, by tossing the carcasses in the sewer, he’s ensured that no one will ever find out about the experiments.  Instead, he’s turned Ramon into a giant alligator who is always hungry.  Soon, the super-intelligent alligator is ambushing and eating sewer workers.

Burned-out Detective Dave Madison (Robert Forster) teams up with Marisa to solve the mystery of why so many body parts are turning up in the sewers.  It’s not easy.  No one wants to admit that there might be a giant alligator living under the city.  Everyone wants to believe that’s just an urban legend.  But, after a tabloid reporter (Bart Braverman) manages to snap a few photographs of Ramon before being devoured, the police are forced to deal with the fact that they’ve got an alligator on their hands.  As Slade continues to try to cover up his involvement, big game hunter Colonel Brock (Henry Silva) comes to town and announces that he will be capturing the alligator.

Directed by Lewis Teague and written by John Sayles, Alligator is a dark comedy disguised as a horror film.  While numerous people get eaten and the film ends on a properly ominous note, Alligator is obviously not meant to be taken seriously.  The cast is full of good actors who send up their own images.  That’s especially true in the case of Henry Silva, who appears to be having a blast as the hyper macho Colonel Brock.  Robert Forster, meanwhile, delivers his lines with a self-aware weariness that seems a bit more appropriate for a noir hero than a film about a detective investigating a giant alligator.  One reason why the film works is because Forster, Silva, and the rest of the cast understood exactly what type of film they were appearing in and they delivered their overheated lines with just enough wit to let the viewer know that the film was in on the joke.  The big and somewhat stiff-looking alligator may not look entirely real and it may move somewhat awkwardly but ultimately, it’s the most likable character in the movie.  It just wants to relax in the sewers but, every few minutes, someone else is bugging him.

When first released, Alligator struggled at the box office but it has since gone on to become a cult favorite.  Quentin Tarantino is a self-described fan and he had said he was inspired to cast Robert Forster as Max Cherry in Jackie Brown after seeing him as Dave Madison in this film.  That’s not bad for a movie about a giant alligator!