Not everyone can attend the Midnight Sun Film Festival, the northernmost and some claim most cinephilic of fests, which makes Midnight Sun co-founder Peter van Bagh's nearly five-hour doc on the Finnish event's 25-year history, "Sodankyla Forever," as useful as it is valuable. Amounting to a declaration of principles on cinema's greatness and featuring a massive roster of world-class directors in public conversation, pic best captures a view of the artform that's wedged between classical and mainstream arthouse, and dominated by men. Fest tour should be epic.