Jackson Pollock: Blind Spots is a sensational exhibition – grand, exhilarating and so unexpected as to make the painter’s career look altogether different. It brings together nearly half of the semi-figurative Black Paintings from the early 1950s. This would be unique enough – they haven’t been shown together since Pollock’s death, drunk at the wheel of his Oldsmobile in 1956 – but here they appear among a tremendous selection of paintings from every period, to reveal a startling continuity between the figurative and the abstract in Pollock’s career.