How on earth does that module send coderefs to other machines? That's magic.
(me - confused... ) Um. Neither I nor the OP mentioned sending coderefs to other machines. If you are basing this off of the part where I said "should be able to do just about anything," I am sorry I wasn't more clear. I also think that it would not allow you to achieve world domination or various other things unrelated to message queuing (which I didn't specify specifically).
On another note - I think that if you wanted to open up your system to arbitrary code execution, and if your coderefs were simple enough, you could pass them through the message queue using B::Deparse and eval.
I guess really that module doesn't do anything that you don't tell it too.
my @a=qw(random brilliant braindead); print $a[rand(@a)];