28 Days Later
The low quality of filming made it so much more tense and cranked up the fear factor a lot. Those red, bloody eyes and the quick zombie jumpscares were super terrifying.
You could totally break this movie down into three sections and end up with three awesome films. The first part, where Cillian's character is roaming the abandoned streets and gets rescued by people gathering resources from destroyed supermarkets and living in underground train stations, has such a surreal post apocalyptic feeling. The middle part of the movie is a super sweet, heartwarming, and adorable road trip across the country, and the final sequence finishes off by taking place under a military regime. Even though this film was shot using an actual Samsung fridge, many of the scenes are stunning, all thanks to the incredible cinematography. Top of the building shots, manchester views, ending "hello" scene, etc. it's all so beautiful (in 360p of course). Cillian is an incredible actor, and others match him as well. For the majority of the movie, you are waiting for more jumpscares and more terrifying visuals, and that beautifully transfers into the fear of humanity. Zombies were blinded by rage and were acting irrationally because of it, and yet they managed to be on the same level of cruelty as the men in uniforms in this movie. That eyedrop scene is something special (((
I gotta say, for such a plain zombie design, they were quite frightening, especially during chase scenes and close up shots. Overall, it is probably the best postapocalyptic movie that I have seen out there, filled with zombies that aren't actually zombies. Also for some reason cillian is naked almost the whole time, like at some point it gets weird how naked this man is.