I really liked Dog Soldiers! The characters at least acted in a manner that made some semblance of common sense - they barricaded themselves in a house with some guns.
Even in a silly format like a horror flick the characters need to act in ways that make some sort of sense or I just can't enjoy it. I hate those flicks where they do stupid things - "Hey, we're all trapped inside a dark old mansion with a bunch of maniacal killing machines - so, let's separate and blunder around in the dark alone and without weapons..."
And that's the problem with 28 days - their actions made no sense! They made no attempt to find weapons, or to find a place that they could defend (a castle, a jail, a bank, an old fort). They made no attempt to find a safe vehicle - the streets are littered with old cars and trucks, so why not find an armored bank truck or something?
Even when the guy does get a weapon near the end, he throws it away!!! And then drives away in a cab, instead of one of those big armored vehicles parked all around.
Stupid movie...
Keith