Thoughts on Summer Knight
Billy the Werewolf had an unpleasant tinge of Incrediboy about him for the first part of the book, but then managed to shake it off. (I've never been much for sidekicks... I hate Robin and characters like him.)
The scene in the Winter Court, where Harry pours icewater into his jeans? Awesome.
"Murphy has a girl gun?" Even better.
Susan is nice and all (proto-vampire or not) but Harry/Murphy seems more intriguing; probably because of the physical contrast.