Decided to bold the SF titles I write about, at a reader's request.

One more book to add (there are more, but I can't put my hands on them):
Across the Wall by Garth Nix (I read his earlier books - Sabriel, Lirael, and Abhorsen - because a friend loaned them to me, and loved them. Saw this in the store and couldn't resist it. It's short stories, and only one of them is in the Abhorsen Trilogy universe, but that one is REALLY good, as are several of the others. In particular, there's one about two kids in a war that's well written. There's also a choose your own adventure, which is a bit bizarre and I didn't bother reading it.)

I bought another book by Nix that's set in a different universe that I'm reading now.