The following clips are available on the Region A version.

Early Wall-E Title Animation Test (0:16)
On Disc 1, at the main menu, highlight "Set Up", press Left to reveal a hidden dot, then press Enter.

Geek-O-Rama (4:48)
On Disc 1, at the main menu, highlight "Play Movie", then press Up. The red "E" in the film's logo will change to blue. Press Enter.