Adult Sheldon's appearance on Young Sheldon marked a sentimental nod to The Big Bang Theory while wrapping up the Cooper clan story. Fans speculate Leonard's fate given his absence in the finale ...

The Big Bang Theory fans on Reddit are still confused about the fate of one Leonard love interest in Season 2.

In The Big Bang Theory, fans got to know the couple of Penny and Leonard (Johnny Galecki), who ended up happily married after a long relationship that, like any real-life one, had its ups and downs.

The elevator in The Big Bang Theory is broken down throughout the series.

Many of the characters who appeared in The Big Bang Theory only for a cameo helped add depth to key details that were crucial in the broader context. How could Leonard and Penny become a couple ...