3 days after my cousin's graduation last year, I went to disneyland and it was totally UNCROWDED! A lot of things had waits for 10 minutes, the longest wait was 4 toy story mania! because it just opened. longest actual wait was 35 min. for space mountain.
Also last year I went to Disneyworld around Thanksgiving and again was totally UNCROWDED! This time there was a reasonable explaination, it was FREEZING! It was worth it, though. tower of terror was a walk on! The longest wait was, again, Toy Story, at 70 minutes,because new. Real longest wait was 4 Expedition Everest at 40 minutes. Oh, and Test Track was a walk on too, but that was because we did single rider, except we ended up in the same car. The wait was 20 for non-singles.