I'm pretty ecstatic about DayZ. I've been saying for years I wanted a zombie apocalypse game, focused on scavenging, repairing, barricading, etc and someone finally came through with most of it. Still very rough around the edges, but what this does more is 1) establishes a proof of concept and 2) promotes the idea to other game developers for future projects.
Can't wait to see what comes out in another 3-4 years. You might as well jam an IV into my arm and sit me on a toilet.