First off, I thought this episode was really good. It's like STEPFORD HUSBANDS. The initial tension with Buffy and Ted as her mother's new boyfriend was predictable, but not unbelievable. The viewers and Buffy can tell right from the beginning that there's something just not right with Ted. He's a little . . . too perfect. And everyone seems to like him a little too much.
I really felt for Buffy. I thought they played out the emotions really well. I could relate, believe, and feel for her dilemma; when her mom won't believe her but she knows Ted's a creep, and when she thinks she killed a human man. Ted really plays an evil creep well. And honestly, I was not expecting the ending at all. I liked it, though I could see how some people might not.
All in all, though not contributing to the vampire storyline whatsoever, it was still a thoroughly enjoyable filler.