Easter egg: On disc 2 of the 2-disc special edition, enter Mastering The Blade. Highlight Return To Bonus. Press left and down. This should highlight the keyhole. Press OK to see a short clip of the dog and its trainer.
Easter egg: On Disc 2, highlight "Jerry Bruckheimer - A producer's photo diary", press Left three times. This should highlight some of the grass. Press OK to watch a clip of the Coconut Man.
Easter egg: On Disc 2, highlight "Creating the Kraken", press Left and Up twice. This should highlight a piece of the grass. Press OK to see how they animated the Twin Pirates.
Easter egg: On Disc 2, highlight "Fly on the set - The Bone Cage", press Left, Down and Left. This should highlight a leaf. Press OK to watch a clip with the stand-by painter.
Easter egg: On Disc 2, highlight "According to plan", press Left twice. This should highlight a leaf. Press OK to watch how the food was made for the entire film crew.
Answer: There is a scene after the credits of "The Curse of the Black Pearl": the monkey got back to the cave and took a coin. That way he turned undead again.
Bjoern_Buller