After months of gruelling cancer treatment, Michael Douglas gets his sparkle back on family holiday to Disney World

By DAILY MAIL REPORTER Smiling again: Cancer-stricken Michael Douglas beams for the cameras at Disneyworld alongside wife Catherine Zeta-Jones, Dylan (L), age 10, and Carys (R), age 7It's been a difficult year for Michael Douglas and his family, but today they put their worries aside for a holiday at Disney World, Florida.And in an encouraging sign, the 66-year-old looked healthier than he has in