4. The Birdemic Birds
Movie: Birdemic: Shock and Terror (2008)
When making 2008's infamously cheap Birdemic, writer-director James Nguyen took inspiration from Alfred Hitchcock's seminal nature-gone-awry film The Birds. Upon hearing of this through beyond-the-grave telekinesis, Hitch promptly rolled over in his grave.
Made for only $10,000, Birdemic is mostly a dull romance picture, so when the killer birds finally show up and wreak silly havoc, it's a welcome distraction. Especially considering that the CGI vultures and eagles look like stickers moving around on the camera's lens, and the poor actors shamefully flail their arms at the air, obviously clueless as to where Nguyen will place the birds in post-production.