I give this a big thumbs up, and was lucky enough to see Scalzi at a book reading just as the novel came out. I really like Scalzi's other works and Redshirts compares well to some of the "Old Man's War" series. From the blurb one might just see it as a sort of Trek spoof like Galaxy Quest, but it's definitely much more than just that. The second half gets really interesting. If you're a fan of his, I think you'll enjoy this.