TV as you know is a form of entertainment. On other other hand, NetBeans is a multi-lingual IDE, a community and a platform, let's say something inherently technical.
NetBeans T.V. is an amalgamation of both, i.e. an effort that joins both your hands. Explore it here. The part which i liked the most were the high-quality screencasts that really make your life simpler by delivering tutorials in an out-of-box fashion. Other than screencasts, it boasts of latest tech-news related to NetBeans and a wonderful community that is always ears to your problems.
Another worth mentioning resource, which i personally prefer is NetBeans Master Index available here. It has it all. Everything that you would ever need to know about NetBeans can be found here. And yes, you can also contribute it in. We at Sun encourage you to write tutorials, articles describing any new feature you want to.
Also you can have a look at the multi-faceted face of NetBeans here.