Anyone got source code for the 'TGB Collision Detection Fixes'?

Melv May has produced some amazing video of collisions and physics using the TGB (see YouTube movies link below), but I can't locate the TGB source code/resources used to make these videos. Can someone please post it, or link to where it may be available?

It would be a fantastic way to find out how to do collisions and physics well, by examining this code... :-)

http://au.youtube.com/user/melvmayutube