I'm competing in the Google-sponsored AI Contest, under the username wintrmute.
I'm entering a Perl 'bot, which isn't doing amazingly well, but it's fun.
You can see the Perl rankings here: Perl rankings. I see Perl doesn't have that many entries compared to the C++ and Java guys, nor are we doing that well overall. :(
Why not come along and join us?
I have a modified Perl starter package on Github, here:
(It's similar to the default one, but with a few minor improvements. The coding-style is still a bit ugh, IMO. Would be nice to rewrite it all from scratch, but I don't have the time right now.)