There’s nothing really wrong with Back to the Future. Critics loved Robert Zemeckis’ sci-fi comedy when it first came out in 1985. (Roger Ebert likened it to a great Frank Capra film.) And it still delights old and new viewers almost 30 years later. But, like every film, Back to the Future has its minor flaws. The web site/YouTube channel Cinema Sins is “dedicated to pointing out all the sins [they] can find in movies, some big and some small. Some … downright microscopic.” And that’s what you get here. A breakdown of every little problem and inconsistency in Zemeckis’ film. Fortunately, the folks behind Cinema Sins don’t take themselves too seriously. Nor do they consider themselves beyond reproach. Heck, this summer they produced Everything Wrong With Cinema Sins In 3 Minutes Or Less. You can watch it here.