I just saw PotC3, and TBH I don't know whether I liked it or not... Alot of it was hilarious though, mainly due to the writing. A much better film than the second.
Spoilers Coming up! Warning! Spoilers!
SO they've basically set up yet another PotC film, for Jack to go after the fountain of life/youth/whatever. How silly.
Like SeaRex I didn't mind that Elizabeth became the pirate king althought I thought it was going to be Jack who became the pirate king [I could see Elizabeth voting for him you see].
I didn't like the Calypso thing. Again, great that it wasn't Elizabeth but yeah... It took me ages to realize it was crabs that she turned into. I just thought it was barnicles or something, only when Pintel shook the crab off his nose did I get what they actually were.
I loved the line "Mister Gibbs you may throw my hat if you wish" *Gibbs throws the hat* "Now go get it!" Heehee. 
End of spoilers!
- Rexy