From: Simon Leinen on
is underway:

http://code.google.com/codejam

I just did the qualification round and found it very Lisp-friendly
(especially Comon Lisp friendly). Give it a try, there's still 4.5
hours left (until 2010-05-08 2300 UTC), assuming you can still register
while the qualification round is ongoing.
--
Simon. ("insertsomethingwitty" in gcj)