In the first season finale of the series, Leonard finally works up the courage to ask out Penny. Nervous about what to do on the upcoming date, they unknowingly both go to the same unexpected source for advice: Sheldon.
- Brick Joke: Penny throws her boyfriend's iPod out the window. Some time later, Raj comes in with the iPod in hand, now cracked and useless (he plans to sell it as "slightly used" on eBay).
- My Hovercraft Is Full of Eels: Sheldon tries to learn Mandarin to confront the owners of their favorite Chinese restaurant about their mandarin chicken. Unfortunately, his grasp is not as firm as he thinks it is, so he ends up saying things like "Long live concrete", "Oxen are in my bed! So many oxen!", and "Your monkey sleeps inside me." Since Howard was teaching him, there's the possibility that he was screwing with Sheldon.
- Running Gag: Sheldon using Schrödinger's Cat as advice about Penny and Leonard dating. Penny has trouble understanding it, but with Leonard all he has to do is mention it once and Leonard gets it immediately.