Dracula, as I'm sure many are aware, is written as correspondence between the characters, diary entries, etc. I'll admit that, while I've seen the movie, I've never actually read the source book. The events take place between May 3 and November 10, so someone has decided to chop the book up into emails which will be sent as the events are dated in the novel. Sign up at Dracula Daily.
edit: Apparently, this is not his first go-round, but it is very, very cool.