One of the "Unholy Pentagon" of the film industry, the others being Troll 2, The Room, Twilight, and Manos: The Hands of Fate. It is, quite literally, the worst movie ever made. YouTube movies and high school film projects from 10 years ago have better cinematography, sound editing, acting, and CG effects than Birdemic.
Whenever I make a wrong turn in life, I watch Birdemic to cheer myself up. It makes me happy to see other people fail even harder than myself.