As far as “Scooby Gang’s headspaces are compromised” episodes go, I love this one, but “Tabula Rasa” will always be my favorite, purely for the “Spike and Giles think they are father and son” dynamic.
This was the episode that made me start watching Buffy, and it’s still one of my favorites.
Oh How I Love Xander And Giles So Much. :]].