In season 1, episode 11 of The Big Bang Theory, “The Pancake Batter Anomaly,” Sheldon falls sick with a cold after a sick Penny pays a visit. He’s used to being babied by his mother when he’s ill. But ...

As we watched this week’s episode, 'The Inspiration Deprivation,' we’re realizing this could be the end of the earworm’s era! Soft kitty… warm kitty… oh ...

Iain Armitage meets 'Young Sheldon' on-screen brother Montana Jordan's baby, Emma Rae, while paying homage to 'The Big Bang Theory.' In a clip on Instagram, the actor sings 'Soft Kitty' to the newborn ...

In season 4, episode 4 of Young Sheldon, Sheldon gets hurt while learning to ride a bike. With a cast on his arm, the then 11-year-old Sheldon is desperate to have his mom calm him down. Twin sister, ...

Young Sheldon has become a reality! In the first season of the beloved sitcom, Mary Cooper (Zoe Perry) sweetly sings "Soft Kitty" to her son, Sheldon Cooper (Iain Armitage), when he's sick in bed. In ...

From saying Bazinga to singing Soft Kitty to Sheldon's schedule, we ranked "The Big Bang Theory's" running jokes from ...

In the series finale of "Young Sheldon" — the first major spin-off of "The Big Bang Theory" that wonders "what if Sheldon, but young?" — we see the on-screen return of "old Sheldon" as played by ...

A truly great TV catchphrase is a rare thing indeed. Not only must it be so fully embraced by the public that it takes on life outside the television screen, but it also must speak volumes about the ...

Warning! Spoilers ahead for Young Sheldon season 7, episode 9. Young Sheldon season 7 officially introduces the perfect replacement, and she has the chance to be better than Kaley Cuoco's The Big Bang ...