As for obfu LISP, I'd be surprised if there wasn't such a beast. There may not be actual obfu contests like there are for Perl and C, but I'm sure somebody has tried making obfu LISP on purpose.
I did a couple of Google searches, and it seems that there's not really any obfuscated Lisp out there. Maybe it was so horrendous that the authors couldn't in good conscience unleash it on the world.
Plus, it seems that Lisp obfuscations would generally consist of "Hey! Let's add more parentheses!" One of the great things about Perl obfuscation is that you can use so many cryptic non-alphanumeric characters.
I think Lisp hackers tend to prefer writing things like quines and polyglots in their spare time.