Choose Interactive have launched a new film/game/music project called "The Weathered Underground." As the company puts it:

It's a little of all three, but more than anything it's the finished product to exemplify the goals of an LA-based new media company called Choose Interactive. CI is picking up where "Choose Your Own Adventure" books from decades ago left off, using web 2.0 technology to allow people to watch a film and determine its outcome at the same time.

You can see an example of the project here.