I've seen quite a lot of films, some good some bad and some just down right awful.
Examples of these would be.
Final Destination 3 and the final destination.
Every single spoof movie ever made. (There just so bland, and stupid.)
Avatar The Last Air Bender. (So many mistakes, in the story line, the bending effects were ok, but there was one thing that bothered me, and I know I sound like a complete dick saying this, but. Is it really that hard, to pronounce Sokka, Aang's and Iroh's names correctly?)
Dragonball evolution. (My friends and I, actually made an oath, that we do not recognize this film and anyone of us that mention it, has to be slapped. (We weren't exactly in a mature state of mind when the oath was made.)
Finally this film just takes the cake.