I second this suggestion - all the interesting implications of learning a new paradigm, but nobody can accuse you of jumping on the Lisp/Erlang/Haskell bandwago

I second this suggestion - all the interesting implications of learning a new paradigm, but nobody can accuse you of jumping on the Lisp/Erlang/Haskell bandwagon. Also, unlike some other esoteric languages, Factor has a pretty extensive standard library (everything from OpenGL to database bindings, an HTTP server and HTML templating), it has the ability to call functions written in C in dynamic libraries, and you can compile stand-alone redistributable binaries.