Produced by Edgar Wright, Sightseers is a British black comedy that is certainly one of his lesser known works. It focuses on a couple - Chris and Tina - who go on a caravanning holiday and end up murdering a load of people. Whilst very dark, it is also very funny because of the fact that Chris and Tina seem like normal, boring people and are the most unlikely killers you're ever going to see on film. The poster depicts them looking extremely harmless standing on a rock (well, apart from the axe in Chris' hand), but there is clearly a lot of devastation going on behind them and the intrigue this creates ("how could these two have been responsible for THAT?") makes you want to watch.