Birdemic: Shock and Terror (2010)
Produced with a budget of less than $10,000, Birdemic: Shock and Terror gained notoriety for its poor quality, with many critics citing it as one of the worst films of all time. Directed by James Nguyen, the indie film is about a horde of mutated birds that attacks the quiet town of Half Moon Bay, California. The acting, CGI, and sounds are bad, but its surprisingly good ending makes the movie look like an art film.
At the end of the film, a family is trying to escape the evil birds. The father shoots at them with a gun, and one of the birds flew right into the windshield of their SUV and dies. Bizarrely, for some reason, a flock of doves comes and drives out the wicked birds. Then in a surreal final scene, the family spends a solid five minutes of screen time standing on the beach, holding hands, watching the vicious birds retreat.