I really liked Living Clojure. http://shop.oreilly.com/product/0636920034292.do
Huh, another Clojure book? I was skimming through Programming Clojure, Practical Clojure and Programming Concurrency on the JVM earlier this year (apparently before Living Clojure came out), seems like this would be a great addition to the Clojure resources with all the practical examples and the training program.
On the same note, looks like The Pragmatic Bookshelf is working on a more practical "next step" Clojure book (currently in beta):