A common theme in several of his novels and a number of short stories were simulations (simulacra, automatons) being integrated into our cultural concepts. Even to the point that people believe that their leaders are real, while really they're just simulated characters putting on a show.

So, yes?

Nothing comes to mind, but take this quote from A Scanner Darkly: "Activity does not necessarily mean life, and motion that is circular is the deadest form of the universe."