30 Days of Buffy: Day 28 - Character you love to hate

I'm never really too sure what "love to hate" means... is it like "so bad it's good"? I guess I'd have to go for a baddie and I'll probably have to go for Caleb because he was such a ridiculously over the top baddie that there was nothing to love about him... except that it was Nathan Fillion - so: reasons to hate = many... reasons to love = just the one...