It was billed as the television documentary that would lift the lid on the behind-the-scenes behaviour of Mr Alastair Campbell, the controversial spokesman for the British Prime Minister, Mr Blair.
But the programme, News From No 10, to be broadcast by BBC this weekend, provides some unexpected insights into Mr Blair's behind-the-scenes behaviour, too, and they are not all flattering.
In the 80-minute film to be broadcast tomorrow evening, Mr Campbell appears as a sometimes bullying and defensive press secretary.
But he usually seems in command of the situation, sometimes at the expense of the Prime Minister.
Mr Campbell is shown instructing Mr Blair about remarks he is going to make, wincing at a prime ministerial gaffe, and even having a laugh at Mr Blair's expense.
This happens right after Mr Blair has explained to the BBC's Michael Cockerell, the reporter who made the documentary, that he was not as concerned about his media image as people think.
"It doesn't disturb me from doing the things that are really important," Mr Blair asserts.
"That's why you just spent seven minutes talking to Michael Cockerell," Mr Campbell teases.
Later in the film, as Mr Blair is briefing the media after an event in Wales, Mr Campbell interrupts him in mid-sentence to say: "We have to leave now."
The Prime Minister continues to try to explain himself as journalists run past him and out the door.
The documentary was filmed between April and July, and BBC staff said they were editing it until the early hours yesterday, when it was shown to political reporters who cover parliament, known as "lobby" journalists. For the programme, lobby briefings were televised for the first time.
Mr Cockerell was also allowed access to the inside of No 10 Downing Street.
Mr Campbell, sitting in his office surrounded by photos of his family and drawings by his children, says he is not out to get the media, despite his image as a Machiavellian operator.
"No, I'm not. I'm out to get the government's voice heard," he insists.
Mr Blair explains it was his decision recently to withdraw Mr Campbell from the day-to-day briefings after massive criticism that Downing Street was putting "spin" over substance.
"I decided some time ago that it was sensible, just from the sheer pressure of work apart from anything else, to step back from doing all the lobby briefings every day," Mr Blair says.
But near the end of the film, senior members of the press pack tell the BBC they are actually sorry Mr Campbell has stopped briefing them daily, feeling they have lost contact with the real voice of Downing Street.