Valve's Doug Lombardi sat down with us this week to talk on a bunch of topics including the decisions behind the creation of zombie thrill-killer Left 4 Dead and why Microsoft hasn't given up on Games for Windows Live and just moved to Steam. We also learn that Left 4 Dead, which includes 20 maps stretched over four "movies", will likely get a movie viewer down the line that will allow gamers to watch their entire game session as a movie after a playing through a chapter.
Check out our three-parter after the jump.