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(S02E04) "Momentum can be deferred, but it must always be paid back in full. As I always said to Walter, physics is a bitch." - William Bell to Olivia, on the dangers of jumping universes

Cryonics, frozen heads, worm juice, mercury blood, shapeshifters, and Leonard Nimoy were all featured in this episode, and I loved it all.

Let's start with the worm juice. Olivia must have been seriously craving her William Bell memories to drink that awful stuff. And what a trooper that she was able to keep it down, too. I guess it must have worked. She got some of her memories back, along with some help from the bell -- both the bell they chimed during Rebecca's psychedelic adventure and William Bell. Or Willem, as Olivia used to call him.

Is she right not to trust him? Could he have started the war? It's certainly possible, given his mysteriousness. He said for reasons she might understand later, he couldn't come back to this universe right now, possibly never. Why? What's he doing over there? Is he the one building the army? Is he being forced to? Will he and Walter face off eventually?

(S02E03) "Get my portable chemistry set ... this means bodies!" - Walter to Astrid

This episode of Fringe sort of went along without too many shocker moments -- until the last few minutes, that is. I wasn't all that surprised about the serum that turned people into human explosives, or even that it might be part of a top-secret military experiment. But I was wondering when our friend The Observer would turn up again in a big way and dump something spicy all over his plate of food.

(S02E02) "We're all victims of our own gene pool. Someone must have peed in yours." - Walter to Sheriff Golightly

Creature feature? Or relevant to the alternate universe storyline? Those were the questions running through my head as I watched this episode of Fringe.

What I believe -- at the moment -- is that all of the creature features we had during season one are somehow relevant to the overall storyline. Since things are slightly different in the alternate universe, perhaps there are creatures there who've evolved or avoided extinction that have somehow made their way back to this universe. Of course, it appears that this episode's creature was created right here.

Read my Fringe theories, and follow me after the jump for commentary on tonight's episode.

(S02E01) "I went somewhere." - Olivia to Peter

I can hardly contain my giddiness that Fringe is back, so ... yay! ... Fringe is back! More mystery! More intrigue! More Walter Bishop! More Jean! More jump-out-of-your-seat moments!

It's been a long summer since we last left the crew with Olivia in another dimension, Walter visiting Peter's grave, and the mysterious William Bell played by the mysterious Leonard Nimoy. Follow me after the jump to explore how the season is shaping up so far ...

With The Shield getting set to call it a day, Jay Karnes (Detective Wagenbach) could use a new gig. As is so often the case when looking for work, it's good to have friends. Karnes has landed a new role on FX's Sons of Anarchy, which just happens to be created by Kurt Sutter, writer/executive producer of The Shield. He's signed up for six episodes as an ATF agent named Scott Kohn.

There should be less gunplay involved for Meghan Markle (Deal Or No Deal) and Kellan Lutz (The Comeback). The pair have joined the CW's new version of 90210. Markle will take on the role of Wendy, one of the West Beverly High vixens who takes advantage of her looks. Lutz is on board to play star lacrosse player George Evans. Lutz is 23 and Markle is 26, so it would appear that they've kept that same age appropriate casting the original was famous for. Personally, I just really like the idea of a Deal Or No Deal model being cast on 90210.