Episode 12 of Season 3, titled (original air date: January 11, 2010), is a fan-favorite for several reasons. It perfectly encapsulates the show’s golden era: awkward social dynamics, nerd culture deep cuts, and the will-they-won’t-they tension between Leonard and Penny that defined the series.
Sheldon, who normally despises anything irrational, suddenly starts babbling about feeling the "resonance of quarks" and the ghost of Carl Sagan. Raj joins in, claiming the vortex is telling him to order Chinese food. This is the episode’s physical comedy highlight: the two most rigid (Sheldon) and shy (Raj) characters getting sloppy drunk and dancing around a non-existent energy field. the big bang theory 3x12 link
And remember: The vortex is real, but only if you’ve had 25-year-old Scotch. Cheers. Episode 12 of Season 3, titled (original air
To impress Penny, he agrees to go with her to the psychic’s parlor. The psychic tells Leonard he has "dark hair" and is "disappointed in love." Leonard scoffs, calling it cold reading. But when the psychic claims Leonard’s deceased father is proud of him, Leonard has a brief emotional moment. Raj joins in, claiming the vortex is telling