I haven been hearing a lot lately about Domain Specific Languages and I have become increasingly curious. I was wondering if anyone could recommend a good one that is not too hard to learn and may be useful in a work setting (we do mostly portlet apps or possible to write our tests in)? I just want to poke around and play with it to see what all the fuss is about. I'd like to start by build some apps for personal use and see where it takes me. Thanks in advance!