Dataflow languages (like the one I developed: http://www.nitrogenlogic.com/docs/palace/) seem like they would have a fairly straightforward mapping to/from a purely functional language like Lisp.
By the way, the more I think about this, the less I seem to know even what a "language" is.
Is Lisp a language? No, it's a family of languages, but even Scheme is a language known for its minimal grammar and its infinite extensibility. A common critique says that one programmer can't understand another's Lisp code because there's such a great potential for redefinitions and domain-specific syntactic extensions. If Lisp has a slogan, it's "code is data." Is Lisp a meta-language, or even an anti-language?