The Passion of the Christ - Not because I'm squeamish (or jewish), but rather because a 2 hour torture scene in a 2 hour 20 minute movie, is one of the most boring things I have ever watched in entirety. I guess since we already knew the supposed plot thanks to a historical account, Mel decided he didn't really need to put plot into the movie. Jesus is tortured and then crucified and the Jews and Romans are to blame. Instead of a plot we get a frightening insight into Mel Gibsons mind.
Transformers 2 - Well probably any transformers movie is worth an honorable mention but I haven't seen 3 or 4 or whatever the hell they are up to now, and 1, while being quite stupid, is no where near as stupid as 2. In fact I am quite confident Transformers 2 is the most stupid and cheesy movie of all time. The "plot" is just an incredible mess of contradictions, plot holes, cheesy dialogue, or ideas that sound like they were written by a 3 year old starting to come off a sugar high. I can deal with stupid. I can deal with cheesy. Both together? No, a terrible combination regardless of how good the special effects are.