With The Big Bang Theory running as long as it did, it's no surprise that it spawned its fair share of hilarious running gags ...

Young Sheldon's finale floated the idea that Leonard may be dead, but now The Big Bang Theory franchise is one step closer to ...

The biggest speculation in The Big Bang Theory and Young Sheldon fandom is that Leonard Hofstadter, Sheldon's best friend, is potentially dead.

The Big Bang Theory's best character arc unfortunately proved that, in contrast, its ostensible hero never really grew or changed throughout the show.