Trivia: When Wall-E opens his truck for the first time in the film, we see several wide shots of the interior. In the first close up shot of the shelves containing Wall-E's treasures, there is a shelf containing two bowling pins. Look between the heads of the pins and you can see Rex from Toy Story sitting on the shelf between them. (00:06:05)
Trivia: A subtle reference to this film's 3D format: In Max's box, Trevor finds a pocket stereoscope, which are funky looking glasses that create the illusion of a three-dimensional image from two-dimensional photographs. It was invented by Sir Charles Wheatstone in 1840.