In doing more research to see when the next book in The Long Earth series will be released, I came across Choosing to Die. Incredibly sad. (EDIT: Not just that Terry won't be with us much longer, but because the documentary does a good job of letting you put yourself in that situation. It's a scary place to be, and I marveled at the bravery of those in the film). It's good to see he's still writing and seems to be doing ok, but The Long Earth is an amazing book, and I very much want to read more in that word.
In fact, I think I have to say that I enjoyed it even more than most Discworld books (which I love dearly). The pace is a lot different. It gives you time to settle in and explore a whole new world(s), just as the characters are discovering and exploring new places. Really makes you feel that sense of manifest-destiny that the settlers must have felt. Much different than the quite well established Discworld. And The Long Earth takes the time to really sit down and think about how these fundamental changes to our world would effect how people act and what they would do, instead of having a specific message in mind and then trying to create world around it that ends up failing to feel human.
I wonder if Terry's decision to bring a partner on for this book had anything to do with his knowledge that he doesn't have long here, and that the idea is bigger than a single book. In any case, it worked out wonderfully, and I recommend the book to anyone in this thread who has at least a slight interest in science fiction.