Given the iffy screen careers of David Bowie, Mick Jagger and Bob Dylan, we should all be thankful that Bono chose activism as his side career rather than acting. Just think of all the roles we were probably spared –- surely it was only a matter of time before he'd have tried his luck as a hot-headed Irish mob boss in a Martin Scorsese movie or opposite Kate Hudson in a rom-com about battling employees at a Sunglass Hut.

Chances are none of these hypothetical star vehicles would have been rewarded with an honor as prestigious as the first-night slot at the Toronto International Film Festival. Instead, Bono earned that by just being himself, as have the rest of his bandmates in U2. The Irish rock superstars are the subject of 'From the Sky Down' -- a new film by 'It Might Get Loud' and 'Waiting for Superman' director Davis Guggenheim -- that makes its world premiere as TIFF's opening gala film. A portrait of the years leading up to the band's reinvention with 1991's Achtung Baby, it is the first-ever documentary to open the 36-year-old festival, which dominates the city of Toronto and most of the movie world from September 8-18.