What really interests me is Common Lisp. I am planning on using it for a real web application (omg).

If you are interested:

http://uint32t.blogspot.com/2007/11/web-programming-framewor...

http://uint32t.blogspot.com/2007/11/update-web-programming-f...

http://uint32t.blogspot.com/2007/11/lisp-web-framework-desig...

So far it is fucking amazing. I love it.