Valve's Mac Teasers Just Made Me Change My Pants

It's apparently true: Steam is coming to Mac. Not just Steam, though. Judging by these awesome teasers released by Valve, so are Half-Life, Portal, Team Fortress 2 AND Left 4 Dead. Ho-lee crap. UPDATE: We've got all six teasers now. » 3/03/10 3:59pm 3/03/10 3:59pm