Sure, things date. I saw Fantasia just once, on the big screen at a film festival. And because the festival were good about putting the film in context of it's achievement, I could appreciate it for what an achievement it was when it was made.
It's a bit like Laurel and Hardy. It doesn't make many people laugh out loud these days. But you can still appreciate how it had people rolling in the aisles at the time.
I wonder what people will make of our best, innovative stuff in 70 years time?!
I played Harold Lloyd to my two year old and he liked it. http://www.youtube.com/watch?v=shdzRq4BYWk that's similarly old. I think some things still have a certain sparkle if even if they are out of date.
On topic: I quite like xkcd but I dont have the attention span for this one. It might be great but