I just wanted to mention that Neil Gaiman's Neverwhere has been dramatised for radio and I'm enjoying it greatly. I did see at least part of Neverwhere on TV and also bought and read the book, but it didn't do much for me, to be honest and I can't remember anything about it. However... the radio has turned out to be the perfect medium for the story. Sound effects conjure the setting brilliantly and there is an excellent cast. I recommend it highly.
All the episodes are still available if you haven't heard them yet. It should be available worldwide too, unlike the TV iPlayer.