What Scott said... I am the product of a Lego family, and look how I turned out... OK, bad example...
You can still get classic legos, and if you go to garage sales, you can get tons for cheap...
My brother is still a Lego head, and he is 6 years older then me. He has a kid, so he has all our classic stuff, as well as tons of new. I think there is basically a whole rum devoted to Legos, and trains, and Lego trains...
The Lego movie I like the best is the Camelot scene from "The Holy Grail"
http://www.prism.gatech.edu/~gte548z/camelot.htm