So, during Desmonds flashbacks/flashforwards this episode, i could have sworn i heard at least a few times multiple voices in "the background" of the scene. I was watching it with two other people. After about the third time of hearing the voices, i asked the others if they had heard the voices too. They said yes.

I have yet to rewatch the episode...considering i JUST watched it...but i'm interested to hear if anyone else heard any other voices during the show?

I have no idea who/what these voices might be, but i just thought i'd ask around.