there is a offer from steam powered games, just letting everyone know about it.
if you have nvidia, or ati you can get 3 free games. Halflife 2 deathmatch(online play). Hl2 lost coast and portal. about 50$ value , for free is pretty good
nvidia
http://www.steampowered.com/nvidia/
ati
http://www.steampowered.com/ati_offer1a/