I don't watch TV, so I might be the wrong person to be giving this advice. That said, I think TV is a good opportunity to do Reality Checks, and practice staying aware. While you watch, try to stay aware of your surroundings, your body, and your point of view. Try to keep from getting "sucked in" to the show you are watching. This is similar to how you have to keep your awareness while watching a dream.

If you use it as an opportunity to maintain awareness, it could help you. If you use it as a distraction, it can be bad for your dreaming. If you find that your thoughts are still racing about TV while you fall asleep, you should not watch TV before bed. You want dreaming to be the last thing on your mind as you fall asleep. You want your mind clear so you can give yourself autosuggestions as you fall asleep. Suggestions such as "I will remember all my dreams tonight" or "The next thing I experience will be a dream."