What if cable tv channels had never existed? Then we would have to watch free tv also called the networks: CBS, NBC, ABC, the CW and FOX, along with PBS and the mynetwork channel. You would no more watch fox news channel, MTV, HBO or ESPN. But don't you worry those tv channels exist and you can even watch them through satellite. Whether you like them or not, thanks to our digital aera you now have a choice among undreds of tv channels. But I am sure you do not always find what you want to watch, and you realize afterwards you missed some interesting shows. Then you should definitely find a good tv guide. The direct tv channel listing delivered both in digital and paper versions is the most accurate one. If you do not have satellite, you can still have a preview of this channel guide on the web site of direct tv. Do not forget this simple rule. If you have cable tv then refer yourself to the guide of your provider. The same can be said if you are looking for a tv channel through your satellite dish.