I found a web site with a list of currently available discounts for Disney Parks / attractions / shows, etc, along with some discounts on stuff like car rental, hotels, etc.

Some of the discounts are restricted in who can use them, but I think it will be worth checking back frequently to see if theres anything popping up of use;

MouseSavers.com - Disney Discount - Disney World Discounts - Disneyland Discounts