7x15 The Locomotive Manipulation
First Aired: Feb. 06, 2014 on CBS
Summary: Love is in the air: Sheldon and Amy join Howard and Bernadette for a trip to wine country. And Leonard and Penny rush Raj's dog to the vet.
Main Characters in this Episode
Raj Koothrappali: You do whatever it takes to save her life. If she needs any new organs I'll buy any dog necessary and scrap them for parts.
- Goof (errors made by characters, possibly deliberate errors by the filmmakers): The locomotives used on the Napa Valley Wine train were built by the American Locomotive Company, commonly abbreviated to "Alco." However, Amy calls the company "Alcoa."
- Goof (errors made by characters, possibly deliberate errors by the filmmakers): When Leonard suggests having sex in Sheldon's spot, Penny claims that it is "the least sexy thing anyone has ever said to me." However, in season 3's episode The Pirate Solution, Penny is the one who suggests making out in Sheldon's spot.
- Goof (continuity error): When Penny and Leonard are waiting for the vet, Penny's arms are either crossed with the right arm over the left or the left arm over the right depending on the camera angle.
- Goof (continuity error): SPOILER: When Sheldon returns from Napa Valley and reveals the events of the weekend, Leonard presses for more details. Sheldon states that he kissed Amy Farrah Fowler on the lips, and then offers, "Amy's lips tasted like the brownie we had for dessert." Several scenes prior however, Amy is chatting with Bernadette and Howard over dessert, and it appears to be cheesecake. There's no chocolate in sight.
- SPOILER: First episode where Sheldon kisses Amy on the lips.
- Title Reference: Sheldon feels that Amy is trying to manipulate him into romance while having dinner aboard a vintage train.
- Sheldon's question about the type of couplers shows how little he really knows about trains. Couplers of the type he describes have been outlawed since 1893 for safety reasons, and the cars are all-steel construction, indicating they were built around 1910 or later. Also, these coupler types (and the one Eric describes) all have different and distinct appearances, so a quick glance at the exterior of the cars would have clearly indicated what type they were.