10-year-old Joe Kindregan had already been suffering from a rare neurological disease ataxia-telangiectasia, or A-T, when he met Ben Affleck at the movie set. The 2 quickly became friends, and this friendship made the actor a strong supporter of A-T and stem-cell research. Ben spoke at Kindergan’s graduation and he launched a fund-raiser for the A-T Children’s project. Joe passed away at the age of 27, while most of the people with the same disease rarely live beyond their teenage years.