In the January issue of Backstage Pass, under the What's Happening column, there is a promotion going on called the Wonderful Weeks of Disney. According to the WWOD website:
The site breaks down the 4 seasons and gives good weeks to go down to WDW resorts and talks about the different events going on during the time (like the Epcot food and wine festival, MVMCP, etc). The dates given were compiled by CM at the parks (at least according to the website) as they have the experience in Talking with guests and know when the least busiest times are.The Wonderful Weeks of Disney are special times of exceptional enchantment at Walt Disney World® Resort.
Hope this cam help a few people in their planning trips.