The Last Airbender
One of many "first-and-only" installments of failed franchises around this time. And it is incomprehensible gobbledygook.
Sometimes creators forget that adaptation means actually adapting things, changing a story and its elements by restructuring it and streamlining it in a way that befits the new medium. What you don't do is just film 20 episodes of a television series but trim it down to 100 minutes and make actors say nothing but exposition in-between set pieces that make no sense.
That said... 952
This is not the worst movie ever made. I understand loving a TV show and hating when someone fucks it up, but I just watched M Night's Lady in the Water also. That is so, so much worse than this movie. Its just that people care about <PERSON> and Appa but no one gives a shit about scrunts and narfs I guess. 292