The Third Policeman! Wonderful book that I've read a couple of times. I love the idea of molecular interchange so that one becomes one's bicycle and has to lean against a wall to avoid falling over, while the bike gets to know the way home by itself.
Other repeat reads for me are Ulysses and Dubliners, along with most of Peter Ackroyd's canon. Now I'm just about to start going through Patrick O'Brien's Aubrey-Maturin series again. Can't wait.
Confession time, though - I've never read a single piece of Dickens all the way through.