Just who are these superdelegates anyway?

The Washinton Post has an easy-to-read list here, but it doesn’t include any suggestion of how they’re leaning. All Democratic congressmen and governors are included; the category "distinguished party leaders," which includes former president Jimmy Carter in Georgia and former vice president Al Gore in Tennesse, is more interesting. Will they be forced to declare a preference at the convention?

The Wikipedia page on superdelegates includes indications of who is for whom.