There seemed to be a lot of interest in Domain-Specific-Languages at OOPSLA 2005. Combining some of these ideas with my interest in Natural Language Processing and ideas from literate programming leads me to think that DSLs should me natural-language-like. One Domain Specific Language that has gone this way is Inform7, which I came across in Howard Lewis-Ship's blog entry Beyond domain specific languages. There is a white paper here.
It seems that the distinction between programming languages and natural language will become more blurred over time.
Brian Marick has a couple of interesting blog entries on sentence-style tests and wireframe tests. Tom White has an article on literate programming with jMock.