I just finished listening to a recent episode of the Software Engineering Radio podcast:

SE-Radio Episode 266: Charles Nutter on the JVM as a Language Platform

In this podcast Charles Nutter—one of JRuby’s maintainers—discusses the relationship between non-Java languages that run on the JVM and Java/the Java platform; some history on JRuby and on the recently-released 9k version, and even touches a very interesting programming language which I’d never heard about: Mirah.

If you’re interested on the JVM platform or on JRuby, I really recommend this episode.

P.s.: Hopefully next time I’ll write something about Mirah ;)