Well, today, on the tenth anniversary of Half Life, the people over at Black Mesa decided to have an update!
You can view it here or here.
Also, don't forget to check out their media page, lots of nice stuffs.
Oh and also, steam is offering Half Life for only $0.98 until Nov. 21.
Have you looked at some of the community projects???? Some very good talent is out there, especially with the compose your own Black Mesa Record project. The Soldiers Have Arrived one has to be the best in my opinion. Hey Coz, maybe you could put out a contest or project like that to see if someone could come up with a theme song for C7.