Pirates 3. The epitome of mediocrity. The actions scenes were entertaining but the cheesy jokes and running gags weren't funny at all. A lot of the scenes and story just weren't necessary. For example, what was the point of revealing Davy Jones's angsty past? None whatsoever. That and Chow Yun Fat's character was wasted, especially when you consider his character was extremely stupid. Not surprising really given that the other pirates save Jack and Barbossa seemed the same, but really, he was advertised as a good villain beforehand and...I get the equivalent of nothing. I wasn't expecting the end to play out the way it did though.
All in all it gave enough closure and hopefully now Disney will stop milking this cash cow.