what do Leona Helmsley and Batman have in common?

They were both millionaire philanthropists! (Actually, Leona's charitable contribution will be measured in the billions, but accounting for inflation since Bruce Wayne's time, it would be reduced to many hundreds of millions.)

Helmsley was most famous for tax evasion and questions about her as a landlord. Aside from that, she would have been just another billionaire. But according to the New York Times, her will leaves the bulk of her $4 billion estate to a charitable trust. Beyond that, there are some interesting details, including $12 million for the care of her beloved dog. (Insert Michael Vick or American Doll joke here.)