We used to have a whole forum for this, but a thread will do.
The World's End. Very good movie. Bleak, and Simon Pegg's lead character is quite a messed-up creation. The turn the film takes 1/3rd of the way through to make it more of an Edgar Wright/Pegg/Frost film is a big one, and predictably lost some reviewers. I lost interest too for a few minutes, but the film is so so assured, energetic and bonkers that it's very difficult to hate. Even Pegg's character is very difficult to hate in the end, as the whole thing revolves around him. Pegg plays it all with theatrical aplomb. It's a dark, even subdued bit of work, more so than Shaun of the Dead, which may leave you questioning what you've just seen. But it's undeniably entertaining and lives up to its predecessors, Shaun and Hot Fuzz.