you might like Children of Men, if you haven't already seen it? good action flick and they get the doomed, dystopian atmosphere just right in many places. other films with some shared themes you could check out are Videodrome (Cronenberg) and the original Dawn of the Dead (Romero). the first two Terminator movies i'm betting you've already seen and should probably be mandatory viewing for anyone who likes Alien and Blade runner! if you liked Fargo you might try The Straight Story (David Lynch), for No Country check out A Touch of Evil (Orson Welles, first role for Charlton Heston), for Trainspotting maybe Requiem for a Dream (director's name escapes me).