Ok guys, I made a post about this way back when in December of 2008. Wow that takes me back. Now it looks like we have a release date of September 14th for this little gem and a gameplay movie.
For those that don't know, it's basically a total conversion of the original Half-Life but using the Half-Life 2 engine. I know it's dated by today's standards but I can't help but be excited. Sounds like they are leaving out Zen (Xen?) for now, I can deal with that, kinda hated that level.
Official website link: Black Mesa Source
Almost thought I'd be in a retirement home before this project ever saw the light of day. They were very closed lipped about saying anything regarding a release.