The part where he cheated his best friend and his daughter out of large sums of money (child support, in his daughter's case) are at least as important to my evaluation of his character as the charity thing.

I have heard that he'd become somewhat less of an asshole in his later years, and I know he reconciled with his daughter at some point. I hadn't heard about stuff coming out after his death, though. I'd like to see a source on that.