After many years of a true language mono culture the Java platform is now turning into a multi language platform. Groovy, Ruby, Scala and many more languages are coming into the arena, making the platform more flexible and expressive. Furthermore, Domain Specific Languages (DSLs) help developers to solve specific problems more elegantly and efficiently. So, is this a new language jungle or is it possible to identify specific design patterns to make sure that you always find the right language for the given problem? Sebastian Meyen, program chair of the JAX India 2009 Conference, together with selected experts will try to find answers to these bulging issues.