TV series example of the word

The Big Bang Theory Season 6, Episode 24
It's not that big of an opportunity. I mean, even if Hawking's theories are correct...

The Big Bang Theory Season 10, Episode 23
LEONARD: Previously on The Big Bang Theory...

The Big Bang Theory Season 7, Episode 22
♪ That all started with a big bang ♪

Game of Thrones Season 3, Episode 9
You Southerners build your big castles and you never move.

Game of Thrones Season 3, Episode 6
Is the Wall as big as they say?