I know it’s unlikely that anyone reading this blog has never seen Michael Anderson’s 1955 film The Dam Busters. But if you haven’t – or if you just want to watch it again – you have two more chances this week, on the UK channel Film Four. Tomorrow, Monday 20 July at 4.35pm or Friday 24 July at 1.25pm. “Stand by to pull me out of the seat if I get hit.”