Judith Ehrlich, a former teacher turned documentary maker, has worked with Ellsberg over many years on other projects before telling his story.
She talks about the film which was nominated last year for an Academy Award and which has been highly acclaimed by critics - on critical consensus it was number 1 best reviewed film for five weeks in a row - Avatar was rated number 10.
And while most feature films barely last a month in cinematic release these days, this film ran for 10-14 weeks in Californian cinemas.
Daniel Ellsberg was about to meet with WikiLeaks founder, Australian Julian Assange, who's gone underground to avoid arrest for releasing video footage of US soldiers shooting civilians in Iraq - Ellsberg's war was Vientam.
He released The Pentagon Papers while being hunted down by Richard Nixon's "plumbing unit" - a unit designed to stop leaks.
Judith Ehrlich says the lessons of history are important in this day and age when self-interested parties control the flow of information to the public - a threat to democratic values and the way of life that the troops are sent out to defend.
The video WikiLeaks posted earlier this year.
Brisbane's new documentary cinema, Tribal Theatre, (the old George St Dendy) is screening it this week and maybe next week as a result of a special screening last week.
346 George Street, Brisbane.
Ph: 3409 887