I just finished watching this(DVD version), and absolutely loved it. There's nothing spectacular going on film-making wise, in fact early on I was getting annoyed at the cheesy 'horror-film' tension music and effects, but by the time the ideas of this movie began to unravel, I was totally hooked particularly towards the end. Perhaps because I teach creative writing that I so loved the whole concept of an infection within language itself, and the whole idea of language and meaning breaking down, coupled with the dual-sided Talk Radio as virus of nonsense and radio as the last bastion of salvation under assault by the military (the 'shut up or die' tagline). Anyway, I totally loved the ideas in this movie, it simply demands a repeat viewing. Really a wonderfully creative and special film based on a FASCINATING concept.
To the earlier poster who was asking whether the zombies were fast or slow, just so you don't get the wrong idea, this is not that kind of zombie movie at all. Yes there are a couple situations they have to deal with, but this really isn't a "survive the zombies" movie in any way. It isn't really a pertinent question because that's just not really of significance to the film, which once you see it you'll understand. It's essentially three people locked into a radio station trying to decipher what is going on out in the world from people calling into the station. Eventually their isolation is threatened/broken a little bit, but the movie never leaves the confines of the station at all. But as you will learn, the zombie threat is not from the zombies, and even if they were in an impenetrable bunker they'd still be in danger, because the threat is inherent and internal. It doesn't really spread even, so much as just exist. just exist. just exist. just exist. exist. existexistexistexist