Which TV series is known for the phrase "How you doin'?"

In which TV show would you find a character named Walter White?

 In Stranger Things, what is the name of the parallel dimension?

Which character from How I Met Your Mother has a catchphrase "Suit up!"?

Which TV show revolves around the adventures of a group of survivors in a post-apocalyptic world filled with zombies?

 What is the name of the high school in Buffy the Vampire Slayer?

 Which TV series features a group of friends who are also a family of mutants?

What is the name of the prison in Orange Is the New Black?

Which character from Friends famously says, "We were on a break!"?

What is the name of the coffee shop in Friends?