Penny's job has a wine tasting event. She invites the others, but Bernadette can't go because she's pregnant, and Sheldon can't go because he doesn't want to.
Tropes:
- Five-Second Foreshadowing: Leonard jokes that Claire is a member of Raj's harem, and Raj warns him about karma. A second later, Penny spots her ex Zach.
- Shipper on Deck: Played for laughs. Zach claims he always rooted for Leonard and Penny to get together, with the exception of when she dated Zach, when she broke up with Leonard to date Zach, and when she broke up with Zach only to date Zach again.
- Shout-Out: Raj thinks meeting Bon Jovi was simpler than introducing your girlfriend to your friends.
