Twenty years ago today, HBO went to prison and changed the course of television history. Oz, the network’s first foray into hourlong scripted drama, was the opening shot in a cultural revolution. Created by Tom Fontana, whose Homicide: Life on the Street was one of the pre-“prestige TV” era’s finest shows, and set in New York’s fictional Oswald State Penitentiary, the series utilized its “anything goes” cable setting to push the boundaries of sex, violence, subject matter and sheer scope beyond anything that had come before. Sex and the City would follow in 1998, and the almighty Sopranos arrived in 1999, but Oz is where it all began.

If you imagine a world where The Sopranos never happened and Ozbecame not just the prototype for ambitious cable dramas but also the template itself, the TV landscape would look different indeed. While not a stupid show by any means, Oz is far less cerebral in its pacing and approach than the shows for which it served as proof of concept.

Its six-season plot involves dozens of characters in multiple warring factions whose conflicts rocket along at a breakneck pace. It tackles the big issues with the bluntness of an after-school special rather than the therapist’s-couch thoughtfulness of The Sopranos or Mad Men — or, for that matter, the socio-political agitprop of The Wire (created by David Simon, whose reportage Fontana adapted into Homicide) or Orange Is the New Black (Jenji Kohan’s even more popular and acclaimed prison drama), the major series with which Oz arguably has the most in common. Twenty years later, Oz is a glimpse at a TV world that might have been.

On the occasion of its 20th anniversary (!!!), I wrote about Oz and its very different brand of pre-prestige TV for Mic. The result is of a piece with the essay I wrote for Thrillist using The Godfather to lampoon complaints about showrunners saying “it’s a 73-hour movie” and suchlike. There’s no one right way to do TV narrative, any more than there’s one right way to do film narrative, and I’m dismayed when people act as if there obviously is.

It’s been a decade since “Don’t Stop Believin'” cut off in Holsten’s, and The Sopranos cut off with it. June 10 marks the tenth anniversary of the original airing of “Made in America,” the final episode of creator David Chase’s modern mafia masterpiece. Credited (correctly!) with kicking off a new Golden Age of Television, the show ended on an equally influential note: silence. We’ll never know whether mob boss Tony Soprano was killed as he sat down for dinner with his family (as in nuclear, not crime), or if his life simply went on, with the next FBI raid, hitman or plate of ziti always just around the corner. Nor are we meant to figure it out, no matter what you’ve read on the internet. For Chase, the ambiguity and uncertainty speak not only to Tony’s uniquely precarious existence, but all of ours’ as well.

Demanding, divisive and pretty much perfect for the show it concluded, “Made in America” remains the gold standard for finales to this day. In one form or another, nearly all its successors are a reflection of it, whether attempting to right its perceived wrongs or live up to its masterpiece status. Moreover, as one of the first major shows of its kind that was allowed to end in its own time and on its own terms, The Sopranosaccidentally popularized the unfortunate idea that a show is only as good as its final episode, and that if you don’t “stick the landing,” nothing that came before is worthwhile. That’s an extreme overreaction, of course — a bad finale is not a magic eraser that wipes out the hours you spent enjoying the show up until that point — but it’s a concept creators and audiences alike now wrestle with.

With Tony trapped in that diner limbo for ten years (Schrödinger’s Soprano?), we’re taking a look at six of the standout series finales that have aired since: Mad Men, The Wire, Breaking Bad, Boardwalk Empire, Lost and Battlestar Galactica. What did they get right, or wrong, about the shows they’re concluding? What did viewers take away — and what should they have focused on instead? Should we be asking if they stuck the landing, or if they leapt into the unknown? Fire up the Journey and find out.

I wrote about some of the most satisfying and disappointing finales of the past decade, all involving really good shows, for my debut at Mic.