Downton Abbey is the best. I don't last through many series - interesting or not, if I'm not in the mood to watch tv at that particular time, then I don't watch it. The last show that I would work my schedule around was Cheers. There is no such thing as must-see tv anymore - not for me anyway.
Downton Abbey though, that's some good stuff. Plus getting the disc through Netflix means I can watch it when I feel like it.