--Being a natural athlete, Matt used to break-dance in the Harvard Square for money!
--Matt nearly killed himself losing 40 pounds for Courage Under Fire. He ran 12 miles a day, and ate nothing but boiled chicken and potatoes. He had to take medication for several years to "right his body."
--He wanted to become a professional basketball player before someone told him that he was the tallest Damon, and he was only 5"11.
--Matt is quite a "slob", claims Ben Affleck, who said that one day he had come home to see Matt watching TV beside a box of old sushi that had maggots eating through it.
--Matt says he was the best pitcher in the Little League.
-- Matt was raised in a communal home at one point.
Source:The Unoffical Matt Damon Homepage