[youtube http://www.youtube.com/watch?v=4PE4N7MaFAo&w=560&h=315] Media companies from ad agencies to movie studios are engaged in nothing less than the reinvention of narrative, and the leading edge is something called transmedia, a push to deliver content on your phone, your PC, your iPod, your TV, in the theater. Its needs vary, but one thing's certain: Tech smarts are needed to make it all happen.