I did enjoy it, partly because it's so bonkers. As others said, the sci-fi stuff is just tacked on. Thrillers today seem to be in pursuit of the implausible, which I don't mind, if it's well done. Agyness Deyn and Jim Sturgess were fun to watch. Sturgess's accent was a corker, sort of estuary Essex Eastenders. You slag, you're the one wot's done it, innit?