Of all the Old Masters, Leonardo and Caravaggio are undoubtedly the media darlings, subject to a ceaseless tide of speculative claim and counter-claim (the new loo paper dispensers in my local leisure centre are made by Da Vinci Solutions: is there nothing he couldn’t turn his hand to?). But that grumpy old man-mountain Michelangelo continues to hold his own. Scholarly tomes and popular biographies tumble regularly off the printing press, and the latest ‘discoveries’ remain newsworthy: Was he a fat cat who embezzled from the Pope’s family? Was the Last Judgement inspired by visits to steam baths? Is this a famous lost painting or sculpture?