Does it matter if we've seen them with Rifftrax or not?
In no particular order:
The Happening - Here's a bunch of people committing suicide. The end.
Suicide Circle (and it's horrible horrible sequel) - Here's a bunch of people committing suicide... AND WE'RE NOT GONNA TELL YOU WHY! The end.
Battlefield Earth - Here's... um... THE SCREEN IS TILTED! The end.
End of Evangelion - I hate you all. Here's a movie about you all dying cuz' I hate you. The end.
Exorcism of Emily Rose - Here's a bad courtroom drama disguised as a bad horror film. The end.
Algus: It is the Will of Heaven!
Miluda: Heaven? God would never say such things! In His eyes all are equal! He'd never let this happen! Never!
Algus: Animals have no God!!