Here's one website's list of weeks ranked in order from best to worst weeks to visit.
http://**************.net/planning-...anked-in-order/2009-weeks-to-visit-continued/
I'd be interested to hear what people think of the site's week rankings? It ranks T-giving as week 40, Easter as weeks 41-42, Christmas as week 43, New Year as week 44, and all of Jan/Feb as weeks 45-52 because of ride closures. Just wanted to let other Disney info junkies know about this site--there was a thread a couple of months ago with many people debating the advice that it gives.