Pulp: What Do You Do for an Encore? review – Jarvis Cocker’s wit and warmth upstage the hits

<p>Wonderful archive footage charts the Sheffield outsiders’ unlikely rise, but the distant camerawork struggles to capture the thrill of their triumphant O2 gigs</p><p>In 1978, in the classroom of a comprehensive school in Sheffield, a skinny, shortsighted 15-year-old wrote a miss