When you think "classic screen couples" chances are Scarlett and Rhett, Harry and Sally, or maybe even Jack Dawson and Rose spring to mind.
But how about a death-obsessed 20 year old and a sprightly car-stealing pensioner? If that does not sound like the kind of tale to warm the cockles of your heart, then film fanatic Ant Timpson is here to tell you why you need to see Harold and Maude.