I just noticed that Wall-E will be released in a set that includes a digital copy. While I could just order it on iTunes, since I will give it as a gift to my kids at the holidays, I want to give them a physical present. But I really like digital versions of kids' movies since they don't scratch. (Amazing how people don't see this value in Apple TV since every movie I got from Netflix was scratched and unwatchable. But that is for another day) So my question is: Does the digital copy work on Apple TV, or only on an iPod. I also ask because the advertisement on Amazon where I found this indicates that it's for watching movies on the go.