I've watched quite a few vampire shows and for the most part I tend to like them. Angel was probably my favourite, followed by True Blood, although the last season I watched headed in a direction I found rather boring; I think I might even be a season behind now. I've also watched all of Buffy and some of the Vampire Diaries. Oh, and I almost forgot Being Human, which I would highly recommend, if you haven't seen it. Being Human is about a vampire and a werewolf who move into a house together with the intention of living as normal, as human, a life as possible. It's pretty good.
I haven't watched a show specifically focussing on vampires, but I have watched shows that include vampires in some of their episodes. I've watched Charmed, which is about three sister witches fighting evil, and there are a few episodes with vampires in. I have also watched a bit of Sanctuary, which has a vampire character that appears every now and then.
I like vampires, but not the teenage Twilight kind.
I really enjoyed Moonlight and have watched the first seasons of True Blood, Vampire Diaries, though have since lost interest. My eldest daughter introduced me to American version of Being Human, which I really enjoyed to, but haven't watched past the first season.