All hail Shane Black, the genius behind the latest Iron Man film. Bursting with humour, crammed with more twists than a bag of fusilli and built around a plot that actually – I’ll be damned! – holds together under scrutiny, Iron Man 3 is far and away the best of the series, and certainly the funniest offering from Marvel so far. That’s right, folks. Tony Stark is back and he’s better than ever.