Yeah, there's gonna be a third one. It's called "At World's End". They're even thinking of making a 4th and 5th one. =O
And don't worry. Jack Sparrow is half of PotC, they wouldn't kill him.
^He doesn't have a plan. The only reason he did that is because it would be less lame than just sitting there and letting the kraken eat him. He accepted that he was going to die with his precious Pearl and he was inviting it, basically. He just wanted to end his life courageously.
I loved this movie...saw it at midnight on the first day it came out and got the DVD the first day it came out.
I got Liars Dice, too. That is such a fun game.