Valve software uses zbrush2 on half-life2
http://games.telenet.be/images/reviews/screenshots/175s_35.highres-concept.jpg
news link http://games.telenet.be/specials.php?act=one&rid=175
No surprise there. valve is always on the cutting edge of technology.
Versatility of Zb of course 
Pilou
lol zb it’s révolution
damn I can’t wait for that game to release.
yeah. they just started using it there very recently, after Bay gave them a demonstration.
hah, this is excellent, this is just more assurance that i’ll be able to use Z2 to create all my models for my Doom3 and HL2 mods…wait…wasn’t Valve using XSI at first?
they still are for many things.