Disney announced on Good Morning America yesterday that if you spend a day volunteering with a participating organization, then starting on January 1, 2010 you can get a free one-day admission to Disney World or Disneyland. They haven't released a list of the participating groups yet, but if you think you might want to take part in the offer, they suggest signing up for e-mail alerts which will let you know when pre-registration starts since ticket quantities are limited.
A maximum of 8 family member can participate and children must be at least 6 years old to qualify. So you could theoretically get a free day of admission for the entire family during your next vacation. Not too shabby! Although I'm not too sure I ever want to ride It's A Small World again. It creeped me out when I was 4, it somehow got even creepier when I was 10, and I don't want to risk seeing what's it's become now!