Half-Life 2: The Lost Coast is available on Steam for all Half-Life 2 owners now, and it looks pretty phenomenal. The work they've done to simulate how the human eye works is pretty amazing, and way ahead of the now-trite "bloom" and "glow" effects you see in a lot of recent games. At first I thought that the new high dynamic range visuals would be distracting, but that faded after about a minute, and I think they've done an incredible job. Watching my "eyes" adjust as I stepped into the dark cathedral from the bright outside was just cool. The fact that it still runs at an okay framerate at full resolution and with antialiasing turned on is just mind-boggling.