"Clojure because they're functional and on the JVM" In addition to that I'd add: - Clojure because it's a Lisp dialect (and if you've never learned any Lisp,

"Clojure because they're functional and on the JVM" In addition to that I'd add: - Clojure because it's a Lisp dialect (and if you've never learned any Lisp, then it's good to add that to your skillset too) - Clojure because it also targets other runtime, like say browsers JavaScript engine. ClojureScript looks really interesting and I'm sure we'll some very interesting things in ClojureScript very soon - Clojure because it has STM Now honestly between Clojure and Haskell I'd say that you should really learn both. I'm getting quite OK with Clojure. Now I definitely need to find the time to learn Haskell...