I disagree, obviously, since I said season 5 has no bad episodes. I think Buffy vs. Dracula is fun. It's cheesy, sure, but no worse than some of the season 1 episodes - and at least this was meant to be silly. The ep also does an interesting job of establishing some of the themes of the season re: Buffy's Slayer nature.

Season 2 is also good. I'd put it probably in my top 3.