Zend has kindly donated a 3-user perpetual license for Zend Studio Professional. This is Zend's IDE thingy for PHP; most interestingly it includes a debugger, profiler, and various such extra tools which can be helpful for tricky problems.
http://www.zend.com/products/zend_studio
Domas has expressed specific interest in this; I've got two other seats up for grabs if anyone thinks they'll really use them.
-- brion vibber (brion @ pobox.com)