Buffy but somewhat to my surprise don't watch it. Haven't watched seasons 2 or 3 AT ALL. Which is weird cause I like it a lot.
Xena seasons 1 and 2 and watch them regular-like. Never too much leather-clad women kicking butt, says I.
If Band of Brothers counts then holy crap. Just about the best war picture ever made -- it's a 10-hour movie that I've watched like ten times. And just thinking about it I want to watch it again.
Also have Black Adder which I can get enough of but Mrs. Barsoom LOVES to death. It IS awfully funny, for sure.
And finally a cool BBC series called Ultraviolet -- one of the more interesting takes on vampires I've seen in a while. Six episodes, I think, and very, very good.