Gibney's film never forgets the human side: the macho execs nearly killing themselves on boys' vacations with motorbikes, sky-diving and general risk-enhanced bonding; the suicide of one, the scapegoat imprisonment of another.

... Enron: the smartest guys in the room pinpoints a moment when corporate morality was shredded like so many tonnes of incriminating documents in a big business run by small, small men.

Audiences jeered and shouted at the screen in outrage. It has that kind of impact, without resorting to any of Michael Moore's below-the-belt tactics.

In addition to being one of the most talented documentarian filmmakers alive, Mr. Gibney was also wise enough to recognize there was no need for dramatic or comedic overcooked embellishment here.