922 - The Fermentation Bifurcation
Aired April 28, 2016

The Fermentation Bifurcation

The gang goes to a wine bar and runs into Penny's old boyfriend, Zack. Also, Bernadette gets stuck spending the evening with Sheldon when she can't go wine tasting with the group, and things don't go as planned when Koothrappali introduces his new girlfriend, Claire.

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Guest Stars: Brian Thomas Smith as Zack, Alessandra Torresani as Claire

Writers: Steven Molaro (Story), Jim Reynolds (Story), Anthony Del Broccolo (Story), Chuck Lorre (Teleplay), Steve Holland (Teleplay), Tara Hernandez (Teleplay)

Director: Nikki Lorre

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Episode Notes

  • The title refers to the two different ways the gang spend the evening: Leonard, Penny, Amy, Raj and Howard at a wine tasting event, while pregnant Bernadette spends the night with Sheldon.

> Sheldon's Spot

After spending an enjoyable evening playing Dungeons and Dragons with Bernadette to get her mind off being pregnant, Sheldon tells Bernadette that any time she wants a break from being "Bernadette the Pregnant", "Bernatrix the Warrior Queen" is waiting. When Bernadette says she might take him up on that offer, Sheldon points out that it's only good until the third trimester as he can't risk getting amniotic fluid on his spot.

Quotes (54)

Penny: All right, well, let me know if you guys want to go.
Raj: I would love to. I do enjoy the complexity of an aged Pinot noir.
Leonard: I'm sure that would pair nicely with your fried nuggets of chicken.

Amy: Well, it sounds like a nice night. We should go.
Sheldon: Wine again? Yeah, no, thank you. I like my grapes the old-fashioned way, in a juice box.

Sheldon: Well, it makes perfect sense. Because you're an expectant mother, you can't drink alcohol. I don't like to. You can't have sushi. I don't like to. You can't go in hot tubs. I consider them vats of sweaty people soup.
Bernadette: Gee, Sheldon, I dont know.
Sheldon: Oh, come on. Roller coasters, caffeine, runny eggs, I've been avoiding these things all my life. And now, because you're pregnant, you have to.

Leonard: The difference is she's bringing life into the world, and you suck it out.

Zack: Penny?
Penny: Oh, Zack, hi. You guys remember Zack?
Howard: Yeah, hey, buddy.
Amy: Hello.
Raj: Hey.
Zack: Hey, did you two get married?
Penny: We did.
Leonard: Yeah, mmm-hmm.
Zack: To each other?
Penny: Yes.
Zack: Cool. 'cause other than when you broke up with him and dated me, then broke up with me, and then dated me one more time before going back to him, I was always rooting for you two.

News Stories

Title Date Posted
922 'The Fermentation Bifurcation' Press Release April 26, 2016

CBS has issued the press release for the next episode of The Big Bang Theory, "The Fermentation Bifurcation", which airs this Thursday. Brian Thomas Smith reprises his role as Penny's ex-boyfriend, Zack.  Full story

Comments (1)

Mario D. United States, 11:19 Apr 29 2016.
Kind of liked this episode. At least Penny did not have second thoughts about taking a break from Leonard as was mentioned in a previous synopsis. Thought it was a nice little scene when Zack showed up and asked if they were married and she proudly displayed her ring. Shows that she really cares about their marriage.

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