The fragmenting audiences and proliferating channels of contemporary television are changing how programs are made and how they appeal to viewers and advertisers. Some media and advertising spokesmen are arguing that smaller, more engaged audiences are more valuable than the passive viewers of the Broadcast Era. They focus on the number of viewers who engage with the program and its extensions -- web sites, podcasts, digital comics, games, and so forth. What steps are networks taking to prolong and enlarge the viewer's experience of a weekly series? How are networks and production companies adapting to and deploying digital technologies and the Internet? And what challenges are involved in creating a series in which individual episodes are only part of an imagined world that can be accessed on a range of devices and that appeals to gamers, fans of comics, lovers of message boards or threaded discussions, digital surfers of all sorts? In this forum, producers from the NBC series Heroes will discuss their hit show as well as the nature of network programming, the ways in which audiences are measured, the extension of television content across multiple media channels, and the value that producers place on the most active segments of their audiences.