As an update to my earlier post, it seems OpenMCL also now runs on OSX. This is just the kind of thing I like to read about on my day off (I just completed a month-plus long web app project for a client early this morning and have taken the next few days off to relax and geek out in my own special way). I found this via lemonodor, blog of the aforementioned John Wiseman, who seems to be as much of an AI and Lisp geek as I am. Somehow I managed to avoid reading it all this time, despite seeing it pretty frequently on other fave blogs of mine like Lambda: The Ultimate.