Wed, 08 Aug 2007:
Finally, I got bored enough to update my inclued extension (as promised at OSCON). The extension now comes with a nearly completely non-intrusive data dumping mode. The new inclued.dumpdir can be used to dump the inclued data onto a temporary file without ever modifying any of your php scripts. Also included is some php code to transform the dump data into graphviz formatted .dot files.
Pick up your free & complementary copy of the source code on your way out. And stay clued-in about your includes.
--This quote intentionally not included.