I just got this page on TV Guides site off of MetaFilter. It's a list of the Saturday morning cartoon schedules every year since 1950! What a great blast to the past. I can't believe how young I was when I was watching some of these cartoons. I remember quite clearly when the Plastic Man Comedy Adventure Hour started and I was only 7 years old. Incredible! What fun...
A quick search on Google brings up a bunch of sites out there with clips and pics of the cartoons, but this is great because it has the actual schedules so you can mentally see the cartoons in order just like I did when I was a kid. Total mental mind blast, seriously.