#Erlang is neat. So is #LFE (#LispFlavouredErlang) and #Elixir (but less because #Lisp).
Once, there was also a way to interface #CommonLisp with Erlang using #CLERIC or the #CommonLispErlangInterface. At the moment though, I'm not sure if that's still compatible with the current state of Erlang.
I'd need to test.
#erlang #lfe #lispflavourederlang #elixir #lisp #commonlisp #cleric #commonlisperlanginterface