I've not looked at it in a long time but Hunchentoot is certainly an excellent piece of engineering, and one of the things I was certainly interested in using at the time I was attempting to get into SBCL development.

I should go back and look at it's code again, and see what new ideas I can get out of it now that I've come back to lisp style syntax, though obviously w/o CLOS and the MoP.