"Bill Clinton "is rather a master of what one might call 'strategic emotion,' the use of tears or anger to comfort voters or intimidate the press."

Blogs Matthew Continetti at the NYT:

During his presidency Clinton lashed out at, among others, then-ABC White House correspondent Brit Hume in 1993; reporters who continued to raise questions about his involvement with Monica Lewinsky in 1998; and the Senate Republicans who rejected the 1999 Comprehensive Test Ban Treaty.

These days the former president’s "outbursts" serve a dual purpose: they lend the impression that Senator Clinton is the insurgent running against the media-supported Obama, while also creating the illusion that it is the former president, not his wife, who is actually the candidate for the Democratic nomination. Far from hurting Senator Clinton — who also understands how to deploy strategic emotion, as we saw before the New Hampshire Democratic primary — former President Clinton effectively has rallied a coalition of Democrats to her cause.