Well, in two words.... Alyson Hannigan😀
But it's not that simple of course....
I'm a huge fan of How I Met Your Mother and I also like the three real American Pie movies, but I think they came after Buffy...
Anyway, I watched How I Met Your Mother and every character was so cool, so I looked up what other roles they did play.
And Alyson played, of course, Willow in Buffy and I thought "You've heard of it, but never watched it..." So I checked it out.
But in Germany they didn't air it anymore. (No big deal, I wanted to watch it in English anyway)
Then I made the mistake to pick a random episode. I didn't get anything....:eek2:
But then I decided to watch it all from the beginning and suddenly season 1 was finished and I continued with season 2, then season 3, and so on.
But the things that made me keep watching were the sense of humor (especially Willow, Giles and Xander. They're awesome!), the horror and suspense (I really like horror movies and vampires and stuff and the vampires in BtVS are the hard and vicious ones, which I really like, not the weird twilight ones... sorry, twilight fans😱) and of course the story. It's like one giant movie!
But I have to say, if Alyson hadn't played Willow, I probably woundn't have kept watching it (well, besides the part where I'd never have checked it out without her.) and the same thing with Nick.
For example when I saw the pilot episode I was like "oh man, where's Willow?". I really had trouble finishing it😱
So all in all it's the extremely sympathic cast and the story line. Everything is perfect for me. (well, ok sometimes I'd like less of the romance, but that's a matter of taste.)