Fraud investigator Harry Markopolos is not a nice guy. He would not give up in his lone pursuit of Bernie Madoff, even when the SEC told him to back off. Wendy Davis wasn't nice when she filibustered for 13 hours to block the passage of a strict anti-abortion bill in Texas.
Chasing Madoff is a searing indictment of the fast-and-loose free-market attitude that nearly sank the world economy. I can't imagine how painful it would be to watch it, were I someone who had lost a fortune to Madoff's malfeasance.