Although it seems Matt isn't the biggest Pirate fan around any Forum discussing summer movies should begin w/ the 3rd and probably last good prirate movie as Bruckheimer and Depp probably won't be involved in the future ones.
While the 3rd Pirate movie might lack some of the surprises of the first it definitely doesn't lack the twist, turns and selfish sub plots. The visual effects are outstanding, the scenery is beautiful, the fight choreography is top notch, the addition of Keith Richards was hilarious, and Chow Yun Fat is great.
Overall it shouldn't be nominated for best picture by the academy (although one of the Rings movie was), it is highly entertaining and a fun spectacle to watch.