Watching some of the vids coming out of this year's Perl and Raku Conference. Ingy döt Net's talk on his work on Lingy and YAMLScript was pretty amazing.
Lingy is a #clojure hosted on #perl - Perl code can call Lingy code can call Perl code. The idea of having a Lingy VM with JIT is very appealing.
YAMLScript is a YAML-style dialect of Lingy (or any Clojure implementation), for those who don't like LISP style.