I finally got to see Pixar Animation's Wall.E today. Really clever story with amazing computer animation. Wall.E is a trash-collecting robot who runs off of solar panels. It seems all 3 times when he deployed his panels for a recharge I heard the same start up tones as I hear when my MBP boots up. So I'm assuming that his operating system is OSX. Makes sense since Steve Jobs is a cofounder of Pixar.