This year, the Tiff doc program (September 8-18) numbers 37 titles. It’s led by four veterans — Steve James, Raoul Peck, Errol Morris, and Werner Herzog—big names who will pull audiences, playing alongside newcomers who will benefit from the Tiff spotlight. Fisher Stevens and Leonardo DiCaprio have made a new documentary that they hope will push the needle on climate change. Netflix boasts four high-profile offerings likely to factor in the always intense doc Oscar race. And there’s a plethora of new titles that await discovery — and buyers.