Directed by Martin Scorsese and shown originally on PBS’s American Masters in 2005, this lengthy documentary is an excellent, eye-opening, and musically generous artistic biography of Bob Dylan. He’s a notoriously elusive subject, but No Direction Home pins him down about as much as you can – and even has his cooperation. Sometimes, that weakens a documentary. This time, it strengthens it. He’s invisible now, he’s got no secrets to conceal.