The Fermentation Bifurcation Season 9, Episode 22 -  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

Viewers: 14.13 million Households Rating: 9.3/16 Adults 18-49 Rating: 3.3/13

Available on iTunes

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.

Episode Quotes

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.

Raj: Hey, dude, you're killing me with Claire.
Zack: What are you talking about?
Raj: I mean, come on, look at you. You're classically handsome, you've got a swimmer's body. Next to you, I look like me.

Raj: Yeah, okay, just do me a favor and stop talking about how great Claire is.
Zack: Anything for you, my little foreign friend.

Zack: I see what you're saying. She's not so great.
Raj: Don't listen to him. He says crazy things all the time. Uh, watch. Marco.
Zack: Polo.

Raj: So, uh, what are you guys talking about?
Claire: Your friends were just telling me about all the other girls you're dating.
Raj: Why would you do that? I specifically asked you not to do that.
Penny: We didn't.
Amy: You just did.
Zack: Wow. Maybe none of you guys are smart.