The Big Bang Theory - Season 4 Apr 2026

: "Sheldon: You went out in the hallway, stumbled into an inter-dimensional portal which brought you 5,000 years into the future where you took advantage of the advanced technology to build a time machine...".

In Season 4 of The Big Bang Theory , the plot centers on the burgeoning relationship between Sheldon and Amy, as well as Leonard's romance with Raj's sister, Priya. The Big Bang Theory - Season 4

: "I could never bring a white boy home to my parents. They'd have a cow—which is a much bigger deal in India". : "Sheldon: You went out in the hallway,

: The season finale concludes with the "suboptimal" situation of Penny and Raj waking up together after a night of wine, leading to a pact of silence. leading to a pact of silence.