The infamous "Jersey Week" would be from Nov 5th to Nov 12th 2006, roughly. Basically, the crowds are somewhat bigger from Sun Nov 5th to Tuesday Nov 7th but not too bad. Then on Wednesday November 8th, things get busier. Then on Thursday November 9th, Friday the 10th, Saturday the 11th will be quite busy, but not the most horrible crowds ever seen. Sunday the 12th crowds will calm down some, then the following Monday will be average crowds for that time of year.
Also other kids in other parts of the country have some of those days off, as Election Day and Veteren's Day fall that week. There are plenty of people besides Jerseyans filling up the parks!
BUT - that being said, the crowds still aren't horrible - it isn't "Easter" crowds (though some here declare it as such!). I went during Jersey Week in 2004, and really found the crowds not bad at all. I think alot of people expect it to be dead that week and are annoyed to find it isn't. If you plan ahead, use Fastpass, or make popular restaurant dining reservations well in advance, things are fine. Already, it is hard to book Yacht and Beach Club for the weekend of Nov 10-12.
I believe Pop Warner (large cheerleading/football event) is during early December.
It always seems to be true that the week preceeding "Jersey Week" and the following week in November are less busy. Hope this helps!
