I'm amazed there are so many negative reviews of this film; I thought it succeeded on every level. It's artistic and atmospheric, with a great pace, sympathetic characters, and a fantastic climax. The music is very nicely done, and, to me, the eerie opening scenes of the empty London streets are worth the price of admission all on their own. I'm a stubborn viewer, and, normally, when a film benefits from early critical buzz in the manner that this one did, I find some excuse not to like it. But not this time; I'm completely impressed. (Incidentally, I think it's interesting that while most horror films these days seem to have been inspired by knockoffs of knockoffs, "28 Days Later" apparently owes more to John Wyndham's classic disaster novel "The Day of the Triffids" than to anything else. And that's a good thing.) HIGHLY recommended.