So which is your favourite Buffy season opener? I will go out on a limb and say that When She Was Bad is one of the most perfect openers to any show ever. It bridges the gap between the seasons perfectly, has a very logical storyline, and adds to each character involved, plus there are a host of stand out scenes and witty lines. I also like it because there is actually very little supernatural elements at play, yet it still has that air of mystery to it. WTTH and Anne are both very solid openers, in face Anne gets better the more I see it. Would say that Lessons is the best of later season openers.
When She Was Bad
Anne
Welcome to the Hellmouth
Lessons
Buffy VS. Dracula
The Freshman
Bargaining Part 1