Just got back from POTC3, and it was awesome. It was funny, had a lot of good action/fighting sequences, decent story with some twists, and had amazing special effects. IMO, its the second best of the 3. Dead Mans Chest was my favorite. The ending leaves some room for a sequel, but only very little. And i wont explain why as i dont want to give anything away.
The movie was great and anyone who liked the other two should definitly go see this one.