@bma2192: Especially since wasn't it already established that Young is firmly in the "no man left behind" camp?

@kregano: He was my favorite character!

@tbonesteak: It's a rumor in the show itself, but they've demonstrated through flashbacks and all that she just has a really deep voice.

@Lactose_The_Intolerant: The Thing -1

@Ronnoc: I don't know.

@twophrasebark: Or it could be that ancient Observer-tech made it so our world and Walternate's world couldn't work together. If it weren't for that tech, Walter could have picked up Alt-Peter and everything would have been peachy keen, but due to their fiddling, it caused the explosive mixing of the two worlds.

@entropymaker: This might just be me being persnickety, but if it were from tens of thousands of years of future evolution, I would have hoped they would have been talking in "their language" while standing amid the wreckage in the 1940s Alaskan snow.

@Balmut: RE: Higher plane

@Charlie Jane Anders: I could have sworn Relic Quest was that "Female Indiana Jones" series?

@Walfisch: Still, he's able to work with his father's technology.

@deadmeat1: And Dr. Girlfriend has apparently made a few of the Monarch's tech-toys.

@RandomThought: Exactly! That's not so much "mad" as just "determined & evil".

By my yardstick, what a mad scientist needs to become a "mad scientist" is to science crazy things up for no reason other than the act of making them.

@YoungWilliam: And not just one, but two devices that work perfectly well, although they're described as "impossible" by other scientists in the show.

For those wondering about Farnsworth, might I cite the electro-controlled oversized gorillas he whipped up, purely to stand on his roof and bellow, "LOVE MOM! LOVE MOM!".

@jmcm: Personally, I see Walternate as just Walter pre-op.

@Agent355: And I think that's the back of the head of The Observer on the other side of Peter.

@felipe.gus: They aired the episodes out of order.

I really had to sit and think for this one. The others, it only took 5-10 minutes mulling to settle on one, but this is a toughie.

@RandomDesign: One season of explaining, "Ok, here's what the show's actually about! Next up, we'll get to tell the story and let you see how screwed up things are on Earth, an- eh.. whoops, nevermind"