On this edition of the Cinema Clash: debate over just how great the unconventional World War II drama DUNKIRK really is – or isn’t; Charlie defies the mainstream majority in his exuberant praise of the alien space movie VALERIAN AND THE CITY OF A THOUSAND PLANETS; mutual admiration for the raunchy but hilarious GIRLS TRIP; and a split decision on the Thai drama POP AYE about a man and his elephant.