TORONTO – The Toronto International Film Festival opened its 40th year with a gala double feature of Jake Gyllenhaal and Michael Moore.

The opening night premieres of Demolition by Quebecois filmmaker Jean-Marc Vallee (Dallas Buyers Club) and Moore’s Where to Invade Next made an unlikely pair to kick off Toronto’s fall-movie launching pad on Thursday. Demolition won’t hit theatres until April, and Where to Invade Next is being shopped for buyers. Filmed clandestinely, Moore’s first film in six years wasn’t known to exist until its Toronto debut was announced last month.

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Of the two, Moore’s documentary held more surprises. While it had been expected to be an investigation of the American military industrial complex, Moore does the invading in the film himself, travelling to other countries (mostly in Europe) to find “America’s soul.”

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Moore’s premise is that decades of patriotic chest-thumping and constant war have prevented the United States from taking care of its own democracy. In Slovenia, he finds free university; in Finland, he marvels at its top education system; in Italy, he sees eight weeks of annual vacation and strong unions.

WATCH: Teaser trailer for Michael Moore’s Where to Invade Next

After the film’s north-of-the-border debut was met with an enthusiastic standing ovation, Moore provided Slovenia college applications and distributed German-made pencils to the audience. A satirical placard in the lobby read: “This screening has been authorized by the United States Department of Defence.”

Moore attempted to pre-empt criticisms that he cherry-picked good qualities of other countries while ignoring their faults – a gripe some had with his 2007 health care documentary Sicko.

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“I went there to pick the flowers and not the weeds,” said Moore. Tweet This

Instead, Moore called Where to Invade Next a movie made to inspire change and instruct on how it can happen quickly. The director said he was urged back into moviemaking after the Occupy Wall Street movement and the unrest in Ferguson, Missouri: “I thought it was important to re-enlist,” he said.

Though visibly moved by those events, Moore was still combative. He compared the male dominance of American government to the minority-controlled system of apartheid.

Demolition, the festival’s official opener, premiered earlier in the evening. Gyllenhaal stars as a New York investment banker who unravels after his wife is killed in a car accident. But the movie is comic, and gleefully follows its protagonist’s unhinging as he refuses to mourn.

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“This is probably the most rock ‘n’ roll film I’ve ever made,” said Vallee, a TIFF regular whose last film, Wild with Reese Witherspoon, also premiered at Toronto. “I think we’re going to set the tone for the festival with the noise we’re going to make tonight.”

Demolition, though, yielded a mixed reaction from critics, albeit with fairly universal praise for Gyllenhaal’s dedicated performance. As the latest in a string of lauded work, TIFF artistic director Cameron Bailey dubbed his transformation a “Jake Quake.”

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The Toronto Film Festival will run the next 10 days, featuring the premieres of The Martian, Ridley Scott’s space survival tale with Matt Damon; the CBS News docudrama Truth, with Robert Redford and Cate Blanchett; the gay rights drama Freeheld, with Julianne Moore and Ellen Page; and many more.

Thursday night, a clip reel chronicled the festival’s history, from a small upstart dubbed “the festival of festivals,” to one of the world’s largest and most significant film festivals. Festival director and chief executive Piers Handling reflected on the long journey.

Said Handling: “It’s been quite a ride.”