IT IS NOT A ZOMBIE MOVIE!!!!! ARGH!!! I hate it when people call it that. The "of the dead" series of movies were zombie movies, and art at that. But anyway, 28 days later was good, I enjoyed it..just found the ending to be fairly stupid. I mostly liked the british soldiers with their SA-80's. Man those are nice guns.
They apparently have a tendency to jam if you look at them funny though. It's a zombie film in all but fact, come on people! It's a clever zombie film because you don't have to believe in anything as silly as the dead resurrecting. So it's plausible...