This is from an article in The Guardian: What is it about hitmen? (And apologies to all you feminist hitwomen out there, but "hitperson" lacks that je ne sais quoi, so I'm sticking to the masculine form.) They're all over the bloody place - and, pace Tom Cruise in Collateral, they're hardly ever villains. They're loveable and bumbling like Colin Farrell in In Bruges, loveable and inebriated like…