LOL, quite, and was Sarah really the best choice, well at least it's not Helena up there.

The impersonations are impressive in their own way, of course, because you can actually tell it's one clone pretending to be another, which is even more amazing acting than each clone separately. Cosima giving Alison's speech, OMG. Sarah as a slightly less uptight Rachel. Helena's utter failure to be anyone but herself, as opposed to Alison's eerie acting gift. Wow.