A total conversion of Half Life 1 for the new source engine, it's not just replacing some textures and adding ragdolls. The look is all 100% altered now, it's like a brand new mesa and really gives you the look and feel of a secret underground government test facility.

http://www.moddb.com/mods/4384/black-mesa/videos

www.blackmesasource.com

Looks pretty neat.

It might convince me to play through Half Life 1 yet again.

Yes indeed.
I just had a quick look-see at the art gallery and was shocked by the quality.

Augh, is it done yet?

I just got the original half life about three days ago.

I thought Black Mesa was a private company. Anyway, it looks really nice. Looking forward to it.

This has been in development for so long...

Checked out the forums, it isn't dead and the last update was last christmas...not too far back. And knowing hammer, I can't blame them. Here is a screenshot fo how it looks in hammer. And this is just the bare modeling the map itself and not all the coding to get things moving.

This is Blast Pit. Where you're on the moving carts in the tunnels. Oh, and not to mention that they gotta make all the new chracters, textures, models and script them with AI and shit.

Half life kicks ass!!!