Java, for choosing an object-oriented, static typed language.
Ruby, a dynamic scripting language that I love its syntax, but maybe python would be a better choice for general dynamic scripting language, not because I like it, more because of its ubiquitousness.
And finally Clojure, because it's a member of Lisp family and I always wanted to try one of them, and by running on the JVM it inherits great amount of Java libraries.