Danny Wolf’s Skin: A History of Nudity in the Movies (B) is revealing in all the right ways. Tracing the history of celluloid flesh from silent films to contemporary cinema, this fairly clinical documentary includes talking heads and feisty film footage to explore the mores of over a century in titillating taste when it comes to the sexy silhouettes of popular culture. The recent #MeToo movement puts the doc’s topic in a fresh lens as Wolf looks at a variety of genres, from pin-up fantasies to arty independents to erotic thrillers. Amidst all the privates on parade, the film nearly finds a thesis. Almost more interesting than the bare essentials at the forefront of this film is its examination of the industry codes and ratings associated with art at various time periods. There’s a nice gender balance in the interviews, from idiosyncratic directors Peter Bogdanovich and Joe Dante to Amy Heckerling and Martha Coolidge. Other industry commentators are a bit of a mixed bag. The subject matter doesn’t necessarily deserve the girth of its running time, and some of the extended sequences may feel a bit, well, gratuitous. At times the documentary is a movie buff’s paradise when it’s not feeling like a peepshow with a purpose.