Well, I have to admit that it's more to do with seasons overall for me, but I do really have a few faves, Once More With Feeling (s6e7), Halloween (s2e6), and Fear, Itself (s4e4).

For Charmed it's Something Wicca This Way Comes (s1e1), Deja Vu All Over Again (s1e22), and "Charmed" A Witch"s Tail (e5e1&2).

Want to know what your favourite Buffy episodes are, possibly your top 3,