Vader loves to watch pretty much anything that we're watching at the time, but he goes especially bonkers for that Disney short "Feast." The one about the little puppy that eats all the food. He LOVES that one.
Cricket watches random things- So You Think You Can Dance, Thelma and Louise, Big Bang Theory, dogs on tv, squirrels on YouTube (which my cat likes, as well)... she doesn't seem to have a "favorite." She just watches when she's in the mood.