In case you haven't heard, Disneyland is offering a free one-park admission to anyone that completes volunteer work in their community. They're calling it the "Give a Day, Get a Disney Day" promotion and it will be running through 2010.
Of course, there are some official details you should know about: Must pre-register and sign up for eligible volunteer opportunity. Ticket quantities for this program are limited. Must be at least age 6 to participate. Other terms and conditions apply. For details, click here.