Neighbors (2014)

Released in the UK as Bad Neighbours. Seth Rogen and Rose Byrne play new parents who still miss their party years, and Zac Efron is the gleaming, vindictive frat president who moves in next door. The comedy comes from a war of pranks where neither side is really the grown-up. It is a good pick for a room that splits between people who want to party and people already dreading real life, because the film is on both sides at once. Byrne is the secret weapon, as foul-mouthed and game as anyone in the frat house.