Leonard and Raj take Howard to Vegas. When Sheldon gets locked out of the apartment, he's forced to stay at Penny's for the night, and ends up having to drive her to the hospital.
- I Resemble That Remark!: When Sheldon is compared to C-3PO during a game of 20 Questions, Sheldon protests... in a way that makes him look even more like C-3PO.
- Platonic Prostitution: Leonard and Raj hire a prostitute to give Howard "The Girlfriend Experience" (specifically the "Jewish Girlfriend Experience"). Howard catches on immediately, but thanks them anyway.
- Viva Las Vegas!: The gang, except Sheldon and Penny, go to Las Vegas to cheer up Howard.