Scala is an interesting hybrid OO and functional language I am reading about. It runs on the JVM and integrates with Java frameworks, but still has a varied and interesting feature set.
A basic intro is [Scala Intro:http://www.scala-lang.org/docu/files/ScalaTutorial.pdf] (pdf).
: Scala Intro:http://www.scala-lang.org/docu/files/ScalaTutorial.pdf
So far I like it. The plugin for Scala for IntelliJ is not all there yet so playing with it won't be as easy as it could be for me.
The home page is at Scala Home.