Clojure is fun to try out. I tried it last year and had a lot of fun combining and finding the right function from its huge expressive vocabulary. It inspires you to treat code as data.
I've had a couple of Clojure books I've meant to work through over the past year. Where I'd get stuck is in the development workflow more so than in the language features or syntax. Clojure (and lisp-like languages in general) seem like my usual edit, save, run loop isn't the most effective way (especially if it's Clojure and the JVM needs to start each time if you run cold).