Valve, creator of best-selling game franchises (such as Counter-Strike, Half-Life, Left 4 Dead, Portal, and Team Fortress) and leading technologies (such as Steam and Source), today announced the Source Filmmaker (SFM) and the release of "Meet the Pyro." The SFM is a storytelling tool Valve developed inside the Source Engine to create all its animated short films, including those in the "Mee... more.