GS News - J.J. Abrams and Valve working on game project together
Star Trek director teaming up with Valve co-founder Gabe Newell for unannounced game project; possible Half-Life and Portal films also being investigated.
I'd love to see a Left 4 Dead movie, the game itself is practically designed being a series of movies.
@CriticalCritic Technically speaking, there is already one (look it up). But yeah, it's not "official" and it ain't exactly Oscar-material.