Earlier today I was thinking about the show Heroes, the NBC superhero drama. The show was hailed as amazing in the first season and subsequently went down the drain over the course of three more years. I was wondering what contributed to the show's downfall and while there is a lot (terrible writers, stingy creator, network's creative influence) one of the big things that contributed to the show's downfall was the model of network television. Though not to the extent of Firefly, Heroes moved time slots a few times and had several randomly placed hiatuses that most definitely hurt the show. This is of course done to help spread out the season of twenty-two episodes over the course of eight months. All it winds up doing though is allowing people to forget their show exists. This leads to bad ratings, which leads to cancellation.
The bigger issue of the network TV model, is the number of episodes. Twenty-two episodes per season is insane for a serialized drama such as Heroes. You ever wonder why shows like Breaking Bad, Game of Thrones, The Walking Dead, and True Blood (to name a few) are always talked shows? It's because they air on cable channels, whose seasons run a small number episodes (ranging from six to twelve usually) and all air at once. These small amount of episodes allow writers and showrunners to write compelling stories that people continue to talk about long after the season is over. Short cable seasons also allow better control of the story. Because a show only takes place over ten or twelve episodes, the writers can make sure that something major and exciting is happening in every episode.
By comparison writers and showrunners who work on network shows have to somehow stretch their story over twenty-two episodes and accommodate for these "seasonal" breaks that networks have. This creates filler episodes, or one-offs that have no overall meaning to the show or its characters. Lost fans should be familiar with these episodes (they were usually given to Kate, poor girl). This went on for three seasons before both the writers and ABC realized it wasn't working and made the switch to having smaller seasons. Season four was sixteen episodes, while seasons five and six were seventeen. The show's premiere was also moved to January (February for season six). This allowed the writers to tell the story they wanted without having to shove in useless "story" or interrupt the pace of the story for random hiatuses.
Now this obviously only applies serialized shows. CBS for example has lead the networks in ratings for several years doing everything I think a network shouldn't be doing. Why? Because they're shows are built for it. CBS has had very few serialized shows and they've all failed (like Jericho). Instead CBS' line up includes shows like NCIS, CSI, and How I Met Your Mother. These are all shows that never require you to tune in every week. You can catch an episode whenever you like and realize that almost nothing has changed from the last episode you watched, whenever that was. The trade off here is in quality. While How I Met Your Mother is critically acclaimed, CBS' detective shows are usually paint by numbers in how they work and are thereby predictable and boring.
Slowly but surely networks are starting to see the light. Whether they want to or not they're beginning to realize that shows are better watched all the way through. This is why you see shows that only run during the winter season (September-December) and shows that premiere in the spring and run until May. The only time you'd see a break at this point are major holidays like Thanksgiving (in which case no one is watching TV anyways). My hope is that as time goes on, network execs will realize the power that cable has over them in the case of word of mouth and overall quality and do something about it. I've enjoyed too many shows that fall victim to awful ratings due to too many breaks or quality issues.
Haven't you?