Season 4 is great! It's not my favorite, but it's definitely up there. Adam is a disappointing big bad, but I like most everything else. I totally agree re: transitions. Comparing everyone in Graduation Day to where they're at in Buffy vs Dracula shows how much they change that season, and it happens very naturally.

And so many fun and fabulous episodes!

(We're actually in the middle of S4 right now, having just watched Doomed.)