Do keep this post in mind, though, and come back to it when you've watched it. It's worth a read.
Here are my musings about ... a certain character, copied and pasted from the thread to preserve them for easy access and posterity. Really, stop reading now if you haven't seen it.
You're so right about Claire/Whiskey having the most heartbreaking story, and Amy Acker delivers. Joss really knows how to make the most of her talent.
The end, with the song playing ... got me right in the solar plexus. Whedon gives good poignant.
Perhaps the wipe, the choice, was a strange sort of gift, the sort of benefit that Adelle maintained the "volunteers" received all along: the gift of not having to be who they really were (like Mellie/November's background), with their own memories of pain, though that gets especially convoluted in Claire's case.
We have a Doll who knows she's a Doll. She knows that the personality that loves Boyd is not her own, yet she's making decisions for the body she's occupying. We know that at the end of S1, she chose not to learn her true identity. So, we have the personality of a dead man occupying her body, and that personality loves Boyd, unless Whiskey has had a composite event like Echo. Does Boyd know he's in love with a Doll? Did she ever tell him?
So, then, Claire makes the decision to revert to Whiskey's state, possibly so she won't have to feel the pain of losing Boyd and, in so doing, aiding the others. Is the body's real personality somewhere in the data banks? She's made a choice to do that to a body that, technically, doesn't belong to Claire Saunders. If the gas at the end was toxic, rather than a sleep agent, we can assume she's killed that body. Murder? Euthanasia? What does it mean on a philosophical level to finish the death that arguably occurred in the chair when she was first wiped?
I said in a recent post that I thought this was Whedon's most intelligent and thought-provoking show to date, and I meant it. I love the questions it raises.