I'm not sure how many of you have seen this, but it is an amazing compilation of footage from 1954-55 while Disneyland was first being built. It contains both real time footage, as well as time-lapse footage. What truly amazes me is how quickly they were able to build what they did.
Tony Baxter from Walt Disney Imagineering does an excellent job of narrating you through this footage and pointing out some very interesting facts. It's a five part series, so the link below only contains Part I. YouTube's "related links" should bring up the subsequent footage for you to click and watch.
[ame="http://www.youtube.com/watch?v=U7NooXnWm5U"]YouTube - Building Walt's Dream - Disneyland's Construction PT 1[/ame]