I've become really fond of Groovy during the last weeks. It's compatible with the huge number of existing Java code but more terse. Also its defaults seem more

I've become really fond of Groovy during the last weeks. It's compatible with the huge number of existing Java code but more terse. Also its defaults seem more pragmatic, e.g., "==" comparing Strings by value or implicit setters/getters. And version 2 promises Java like performance (and type checks) for statically compiled code.