Once you have decided you want to show art work on your tv, once easy source is our WeLoveMuseums Digital Virtual Museum. Go over to the WLM @ Home, sign up and select your image categories or artists. There are over 10,000 images of art from ancient Egypt to recent times divided into 300 categories. Once you have created your profile, there is guidance for how to tie the image display to your device of choice.
Watching TED on TV is a good approach to explore all the interesting content to be found there — here is a discussion about it.