I was watching my daughter sit on the couch flipping channels, complaining about how stupid things on TV were, but seemingly unable to get up and walk away. Television is a Matrix for us. A place where our body rests in a safe, comfortable area and our minds wander off in far away places. We don't interact with anyone, we learn little (depends on what you watch), and our muscles are trained to sit.
Video games are similar, but at least they are not completely passive. At least we make choices and are engaged in some mental exercise.