http://disneyparks.disney.go.com/one-more-disney-day/
Disneyland and the Magic Kingdom Walt Disney World will be open for 24 hours on February 29th 2012. Disney will also be giving away one free ticket everyday from January 1st through February 29th 2012 to celebrate having one more day this year at Walt Disney World and Disneyland.
Had to edit my post on my PC as my tablet is kind of buggy like that.