This episode is the best episode in the Buffyverse!!! Everything worked in this episode. The writting was wonderful. The new sets were amazing (I really love the place where the oricles live, that infinit hallway makes them seem so powerful. And their costumes and skin are perfect. Their skin makes them human enough to not think they're demons, but not human enough to make you understand they are on a higher level than us).
The way that Buffy and Angel's love story climaxes here (for I think this is the highest point of their relationship. Within the two series they don't see much more of each other and they never hit this point.) is just amazing.
The scene when Angel tells Buffy that this is the end of him as a human, and they both cry, it is amazing!!!