Glory looks for, and finds, the Key as we set up season 5's endgame.
"You've carried the weight of the world on your shoulders since high school. I know you didn't ask for this. But you do it."
Let's just quickly recap the show putting the pieces in place before the fifth season finale.
In many ways, "Forever" is a more traditional episode dealing with the death of a character than "The Body" was. "The Body" was about shock, but "Forever" is about grief. It's not a great episode, but it has great moments. Angel appears, and has a couple of lovely scenes with Buffy. Xander and Anya have a very nice post-sex chat, where we see Anya really start to grow up. And, best of all, there's a brief moment of Giles listening to Cream and no doubt reliving his and Joyce's "Band Candy" shenanigans. (It's a great moment of private grief, and so very Giles.)