Not long ago we were spectators, passive consumers of mass media. Now, on YouTube and blogs and Facebook and Twitter, we are media. And while we watch more television than ever before, how we watch it is changing in ways we have barely slowed down to register. No longer content in our traditional role as couch potatoes, we approach television shows, movies, even advertising as invitations to participate—as experiences to immerse ourselves in at will. Wired contributing editor Frank Rose talks to the people who are reshaping media for a two-way world—people like Damon Lindelof and Carlton Cuse (Lost), James Cameron (Avatar), Will Wright (The Sims), and dozens of others whose ideas are changing how we play, how we communicate, how we think.