Not sure if this is a bad one or not, but I caught part of some really weird animated thing on HBO last night called A Scanner Darkly. I only caught a little bit, so I really have no clue whether it is good, but the art was rather odd. It looked like someone had colored video or something.
As to movies that did suck, I thought of another one- The Cat in the Hat. This was so bad it produced a number of scathing reviews that are still fun to read. My favorite:
“They might as well have skipped the hassle of securing licensing rights and simply called this mess Mike Myers: Asshole in Fur.”