Easter egg: Go to the Special Features menu and highlight "Deleted Scenes." Press the right arrow key and highlight the robot's eyes, then press enter to see an insulting video telling people to stop looking for easter eggs and do something.
Easter egg: Go to "index" and select the star in the lower left hand corner (I think) this takes you to a screen that has a lot of titles on it. Press "play all" they are little movies like happy meal toys of Buzz Hamm Woody and Rex. They are also in stars all over the DVD (special edition disk 2).
Easter egg: Stay after the credits for a bonus scene featuring Mark and Eddie.