“Rolling Thunder Revue: A Bob Dylan Story” (**1/2 out of four) was an intermittently intriguing documentary from director Martin Scorsese on Bob Dylan’s 1975 “Rolling Thunder” tour in which he went out on the road with Joan Baez, Allan Ginsberg, Roger McGuinn, and others for a tour that was culturally significant in playing many lesser and smaller markets but lost money for all involved. For devoted fans of Dylan, this is a virtual feast, with lots of old concert footage and both old and contemporary interviews with him; for the rest of us, it’s interesting in parts but awfully self-indulgent and excessive, not to mention long at nearly two-and-a-half hours. And by the end, it’s hard to fully grasp just what made this tour so important anyhow and why it was so different from Dylan’s other tours. Sharon Stone, Sam Shepard, and Patti Smith are all featured in guest interviews.