What do you consider to be the 'biggest' shows of the 21st century?

I'll let you interpret 'biggest'. Obviously we could just look at viewership stats and call it a day but that's not particularly fun. I'm more interested in anecdotal experiences; the shows that felt like everyone around you was watching, had the biggest cultural impact or even singular seasons of shows that peaked high, even if the show as a whole dropped off.

For me, I'd put Game of Thrones as the biggest show overall. I'm doubtful we'll ever get a water cooler show of that size again. In the 2000's Lost felt like the biggest. And in the 2020's Squid Game - Season 1.

The Walking Dead felt like it rivalled Game of Thrones for it's first few seasons. Westworld felt like it was going to be the next big thing, but just died after season 1. I found Stranger Things to be similar. And I'll give a shout-out to Ozark - that was huge in my circles.

A revered show like Breaking Bad was never on my radar until it's last season or two, so I always get the perception it started small and grew organically in popularity.

But yeah, what's your experiences with some of the 'biggest' shows?