They're also known as 'water cooler' shows - despite the fact that, as Seinfeld's George Costanza once remarked, "Nobody drinks from a water cooler any more. They use bottles."
They're some of the greatest TV series of all time. They're the dramas everyone's watching - or already watched - and thus, they're often the topic of polite conversation at dinner parties/down the pub/around the aforementioned office water cooler.
We're not suggesting you lie to cover your embarrassment - after all, you're a busy person, you can't have seen everything, right? But if you're not up for admitting the whole truth, just try using one of our get-out phrases below. They're guaranteed to show just enough knowledge, yet also move the conversation on. And away from you.
(Alternatively, of course, you could just watch them.)