Dunn and McFadyen have done Geddy Lee, Alex Lifeson and Neil Peart the service of resolving their eventful, four-decade career. It's a smart, lyrical, often funny movie.

Fans will gorge on this deft, year-by-year portrait of the ultimate enduring cult band. And even a skeptic may come away with an affection for the intricate labor of Rush's skewed-time-signature epics.

A wonderfully engaging and genuinely interesting career profile of Rush, those most derided of prog-rock shriekers, tracing their path from anonymous Toronto suburbia to self-effacing power-trio legends.

Being able to play several time signatures in one song at lightning speed may be a dubious skill, but the film shows that the band has a surprising sense of humour about its excesses.