Remember, though, there really isn't much available for free on Steam, that isn't available elsewhere. They aren't really giving away anything that isn't usually free (aside from Half-Life 2: Deathmatch).
pretty sweet. im installing sam and max ep 4 right now. i noticed yesterday when i installed half life 2 that lost coast and deathmatch were free upgrades. i remember seeing lost coast with a price tag on it before. good stuff man.