Imagine if zombies weren’t just outright observable walking vegetables and it were a little harder to tell when the change happens? There’s countless variations on the theme, but The Crazies manages to be really unnerving by adding a dose of mental unrest in with the formula. After a strange toxin infects the water supply of a small town, people begin showing symptoms of instability, psychosis and then full on murdering each other at random. The town Sheriff (Timothy Olyphant), his Doctor wife (Radha Mitchell) his deputy (Joe Anderson) and a survivalist girl from town (Danielle Panabaker) band together to escape not only hordes of townsfolk infected by this mania, but also the military brought in to ‘contain’ the situation. It’s a hectic, ultra-violent affair with a doom laden apocalyptic vibe and plenty of explosions, but the real scares lie in the disconcerting way that otherwise simple townsfolk just start to slowly lose it and act mentally disassociated, before getting downright homicidal. Especially effective is a scene where a woman is helplessly strapped to a hospital gurney and one of the crazies slowly enters the room, the dread is palpable and it’s a true scene of horror. Scary stuff.