The following clips are available on the Region A version.

Puss Chases Dot Of Light
From the "Extras" menu, go to "Special Features", then enter the "Preview" menu. From the first menu entry, press Up to reveal Humpty Dumpty, then press Enter to view a clip of Puss In Boots chasing a dot of light while trying to pose for the movie poster.

"The Boots Are Made for Walkin'" From Shrek 2
At the "Deleted Scenes" menu, highlight "Puss in Boots Fights the Giant", press Left to reveal Humpty Dumpty, then press Enter.

Cat Premiere
At the "Special Features" menu, highlight "Kitty Strikes Again", press Right to reveal Humpty Dumpty, then press Enter.