I've just recently started watching Highlander..? I know it's cheesy and bad and corny and overly dramatic... but it's so much fun. And Adrian Paul is one handsome fella. And it has QUEEN!
I don't watch TV much, so the few things I do see are things I get in collections, thus watching one series takes a long time as well. That's why I haven't seen a single episode of Dr. Who yet, because I'd start at season 1 and work my way up. It'll be one helluva project. Though I bet I like it.
I've seen 5 seasons of House M. D. That's always fun, though I MUCH preferred the earlier seasons. And I've almost seen one whole (first) season of True Blood, because someone made me. Not my thing really, it was too dramatic and soap opera and just ugh. I've also seen three seasons of Metalocalypse (BRUTAL!).
The only one I've seen on TV is Star Trek Next Gen, but that was as a child. So I don't know a lot about the story line, but I know the characters, and I loved it. Especially for the different species. And I've seen parts of the Twilight Zone, Addams Family (the good old 60's show) and some Batman the Animated Series. But that was for my Harley Quinn research, as I knew nothing of her beforehand and it was for a roleplay.