A Variety report says that Valve is willing to make a Half-Life movie to broaden the franchise's audience.
According to a story in today's Variety, Valve has been actively talking with Hollywood studios about a Half-Life feature movie project. The new movie talks are timed to follow up on all the attention Half-Life 2 received at E3 2003, and Valve's Doug Lombardi is quoted as saying that Valve is looking to for a project that would extend the elements of the game and broaden the franchise's audience. The talks are at an early stage and no details are available. We'll have more on this story as it develops.
News source: GameSpot