Should I be worried that my dog is addicted to TV?

So it all started a few weeks ago, I started watching Too Cute on Animal Planet (a show about puppies and kittens growing up). It is adorable. My dog never once has shown any interest in TV until that show came on, and she would sit in front of the TV for literally the entire episode. Then she started watching TV even when there weren’t animals on (although at times she would get bored and lay down). When I play Call of Duty: Ghosts she watches because there is a dog that you can get at times, and she whines and cries at it whenever she sees it. Now she watches me on the computer. In fact she is watching as I type this. I also have a couple of pieces of artwork on the wall in here that has dogs on it and one day I caught her staring at that!

So now you have the history of it. I worry because at times she gets really into it and starts whining and even shaking sometimes. I think I know dogs pretty well, but even I am having a hard time telling if she is just really really excited, or if she is just stressing herself out. Thoughts?