http://thecodelesscode.com/case/1
My favourites so far are cases #4, #5, #7, #9, #11, #12, #21, #23, #26, #27 and overall the Laughing Monkey Clan.
Specialists in the business tier, where monkey business usually happens. Members of this clan have a traditional fighting style which involves throwing wrenches at their opponents; this is tolerated because it is not the worst thing that Monkeys have been known to throw.
There is a theory that an finite number of Laughing Monkeys pounding away randomly at an finite number of keyboards will eventually get a clean compile. The existence of the Standard PHP Library would seem to imply that this has already happened.