Languages I Want to Learn

I’ve fallen off the wagon of late in learning “a language a year” (as The Pragmatic Programmer advises). I have a long list of languages to learn, but I thought I’d try and narrow it down to a top five. Here goes:

* “Io”:http://www.iolanguage.com/ – the more I work in OO the more I am drawn to prototype-based OO; and all the Io code samples I’ve seen are beautiful.
* “Smalltalk”:http://www.squeak.org/ – one of those languages I feel like I already know from many years of tangential exposure, but it would be nice to be able to build a real app in it.
* “Scala”:http://www.scala-lang.org/ – learning Haskell left behind a lingering itch to play with powerful type systems that help rather than hinder, and Scala seems like a pragmatic environment in which to do so.
* “Clojure”:http://clojure.org/ – the early buzz is growing on this one. Good documentation for a young language, and I like a lot of the design decisions.
* “PROLOG”:http://en.wikipedia.org/wiki/Prolog – the only language in this list which would actually expose me to a programming paradigm I am not terribly familiar with.