http://www.gametrailers.com/player/usermovies/293049.aspx?playlist=featured

An entire remake of the original Half-life on the updated Source engine with a completely revamped look, rather than the copy paste job Valve did near the release of HL2. 

Awssum. 

http://www.blackmesasource.com/index.php

I seem to remember, it was actually announced a while back, when Valve said they were going stop supporting Half-life: Source, and hand over development to someone else who could put more time and effort into it.  But now we have a new trailer and a firm release date of....2009...sometime...

I like the way most of the dev team have codenames, like on The Matrix - "Trinity!  Raminator!  Nooo...."