Oh come on. How can anyone not think Batman and Robin was the worst movie ever made.
It almost destroyed Batman. Some thing not even the Joker could do.
Plan 9 from Outer Space...
Plan 9 from outer space

Some quotes, and keep in mind this was meant to be a serious horror/scifi movie....
Paula Trent: ...A flying saucer? You mean the kind from up there?
Jeff Trent: Yeah, either that or its counterpart
Air Force Captain: Visits? That would indicate visitors.
Colonel Tom Edwards: This is the most fantastic story I've ever heard.
Jeff Trent: And every word of it's true, too.
Colonel Tom Edwards: That's the fantastic part of it.
Lieutenant John Harper: But one thing's sure. Inspector Clay is dead, murdered, and somebody's responsible.
Lieutenant John Harper: It was a saucer.
Patrolman: A flying saucer?
Jeff Trent: So what if we *do* develop this Solanite bomb? We'd be even a stronger nation than now.
Eros: Stronger. You see? You see? Your stupid minds! Stupid! Stupid!
Jeff Trent: That's all I'm taking from you!
[pistol-whips Eros upside the head]
...I'm sure a lot of people will mention grade-D genre flicks like Plan 9 from Outer Space or Manos The Hands of Fate, but when someone with no experience and little money fails, it is much less impressive a spectacle than when someone with a lot of industry experience, connections and a bevy of corporate sponsors fails just as hard.
Umm, Waterworld??