Really cool episode last night. I love the idea of sleeper shapeshifters. Plus more insight into Peter noticing the BOlivia differences, and the struggle she's having. The thing I love the most about that is that I think it all but guarantees that Peter and Olivia won't be an item once she returns from the other universe; shows tend to work better when the leads don't couple up. Them finding each other again needs to be a payoff that happens years from now.
And Walter in charge of Massive Dynamic is looking like it's going to be all I hoped it would be.