How big a deal are perjury and obstruction of justice? Well, they sure were important in Watergate. And, Republicans claimed that this is why Clinton needed to be impeached and removed from office.
So - take a look at what John Dean is saying today
http://writ.news.findlaw.com/dean/20050520.html
Washington Post reporter Walter "Pincus, for example, reportedly confirmed the time, date, and length of his conversation with a source..., but Pincus would not reveal his or her identity."
Cooper reportedly provided Pincus-style cooperation (times, dates, but no names) - yet Fitzgerald is still going after Cooper, to force him to testify. [This explains] why Cooper and Miller might now be central players: Their testimony may be needed to make a case of perjury or obstruction of justice.
Is this a big deal or what?