Its calculated..and I don't think she's done..she's the best "politician" of the bunch.
I can't prove 'the cry' was intentional, but there's no question that she's easily the best politician (and I'm not saying that as a good thing) on the Democratic side.
Hillary 2008, I must admit, would be a lot easier to swallow if:
1) she hadn't been President already
2) I'd never heard of her
3) she didn't kill JFK, Jr
She seems a lot more human now than she did during her first reign as President, but I'll never trust her.