28 Days Later
Rewatching the 28 movies with some friends who have never seen them before and every time I rewatch this movie I like it a little bit more. I know weeks won't at all as I tried to rewatch it a while ago and remembered how utterly dookieshit was, but I'm interested to see how the two years movies hold up on a rewatch.
Also probably the most accurate on screen depiction of the British army to date.