I can't beat Joel's picture review. Go look at his review instead of mine.
This was Murakami's first novel published in English, and it's got everything I like about his work - and most of what he was become known for: the dissociated, disaffected characters, the portrayal of contemporary Japanese culture, enigmatic women, jazz music... and deep, deep weirdness.
It also features the Sheep Man, and ear fetishism.
The surrealism and metaphysical musings never get in the way of an entertaining story - rather, they add to it. This might actually be my favorite book I've read so far by Murakami - but I haven't read all of them yet.