Effects and Geoffrey Rush saved the movie for me.

Rating: 7/10 (4 June 2007)

That is all that needs to be said about Pirates of the Caribbean: At Worlds End. The visual effects and CGI are nothing short of absolutely incredible. They are so believable. I would go as far as saying that the maelstrom sequence is one of the best action scenes ever.
Then there was Geoffrey Rush, who's acting was excellent.
Besides that, the movie was poor. Johnny Depp's character, while still awesome, was not as exciting as he was in the first two. His introduction wasn't terrible, although it was more of a "wtf?" and less of a, "yeah, awesome!" I wasn't trying very hard to follow it, but the multiple plots, deals, and ideas confused me. Everything seemed sort of rushed, too.
As I will say for many summer movies, see At Worlds End for its stunning visuals, rather than its characters and plot.