Easter egg: The hidden clip entitled "Secret behind the scenes look at the animation department" can also be found on the 2-disc edition. On the second disc with the extras: highlight the choice 'gag reel' then press the right-arrow. The little circle between the menu blocks now glows red. Press enter-button to watch.
Easter egg: On the special collector's edition, in the Special Features second menu (go to Special Features then go to MORE - its the menu with the gag reel and deleted scenes) then press 1 on your remote. The EXTRA written on the upper-left of the newspaper should light up and you will get a 2 minute clip entitled "Secret behind the scenes look at the animation department, by Steve Meyer". There's a surprise ending so go watch it.
Chosen answer: The rocket has been rigged to burn the athmosphere if the rocket reachs 100km - the boosters will fire and destroy life.
Dr Wilson