I don't know if I should admit this, but I'm big a fan of the Buffy the Vampire Slayer series; the first three seasons were terrific. The characters were well drawn, fun, and very likable. The plotlines ran from the usual--classical horror and science fiction fare--to something more original, and then there is Buffy. Who could ask for a better protagonist? She was tough, vulnerable, and super cool.
Here is the opening credit sequence from the second season.