I think there is another thread around here about this topic, anyway, a few months back the wife and I got paid cash to watch Jimmy Falion doing skits for what sounds like will become the tonight show when Leno leaves. I enjoyed all the skits I saw (wife saw different clips than I). It was a nice break and well worth it, our daughter was too young and they let her watch a DVD up at the entrence will we watched the clips.
I've never seen Downton Abbey, but they did a hystical spoof that included Woopie Goldberg and Ice Cube if I remember correctly