Television has spent more than half a century changing alongside the people watching it. What started as a piece of furniture that families gathered around at a specific hour eventually became something we carry around on phones and laptops.

The shows changed too. Every decade produced television that reflected what audiences cared about, what they found funny, what made them uncomfortable and what they were finally ready to talk about. Some shows introduced new genres. Others changed the way stories were told. A few became so popular that even people who never watched them knew the characters.

From the family sitcoms of the 1950s to the streaming hits of the 2020s, these are the shows and trends that helped define each era of television.

The 1950s established what television could be

Television entered American homes rapidly during the 1950s, and many of the formats established during this period are still recognizable today.

I Love Lucy became one of the decade’s defining programs. Lucille Ball and Desi Arnaz helped turn the sitcom into a television institution, while Lucy Ricardo became one of the medium’s earliest truly iconic characters. Episodes built around chocolate factories, grape stomping and increasingly disastrous schemes remain recognizable generations later.

The decade also belonged to variety programs and family entertainment. The Ed Sullivan Show became a Sunday-night fixture, while westerns such as Gunsmoke demonstrated television’s potential for long-running storytelling.

Most importantly, television became a shared cultural experience. Millions of people could watch the same program and discuss it the following day.

The 1960s made television bigger and stranger

By the 1960s, television was comfortable enough with itself to become more experimental.

Star Trek imagined humanity exploring space while using science fiction to examine social and political questions. Its original run was relatively short, but its influence became enormous, producing one of entertainment’s most enduring franchises.

At the lighter end of the spectrum, shows such as Bewitched and The Addams Family mixed traditional domestic comedy with supernatural absurdity. Batman turned comic-book adventures into colorful television spectacle.

Television was still dominated by networks and strict schedules, but the possibilities of what could appear on the screen were expanding quickly.

The 1970s brought real-world issues into the living room

Television became noticeably more willing to confront uncomfortable subjects during the 1970s.

All in the Family addressed racism, politics, gender and generational conflict through a sitcom format. MASH* mixed comedy with the realities of war, creating episodes that could move between ridiculous humor and genuine tragedy.

Meanwhile, Saturday Night Live arrived in 1975 and introduced a different kind of television comedy built around sketches, celebrity hosts, music and topical humor.

The decade demonstrated that popular television could entertain huge audiences while still discussing difficult subjects. Sitcoms, in particular, became places where social changes could be explored inside familiar homes and families.

The 1980s turned television into an event

The 1980s loved television that felt big.

Dallas turned wealth, family conflict and betrayal into addictive prime-time drama. The question of who shot J.R. became a genuine cultural phenomenon.

Miami Vice brought music, fashion and cinematic visuals into the police drama, while The Cosby Show became one of the decade’s most watched sitcoms. Shows such as Cheers demonstrated how powerful an ensemble of familiar characters could become when audiences spent years with them.

Cable television was also expanding, giving viewers more choices than the traditional broadcast networks had offered.

Television was becoming more fragmented, but the biggest shows could still create enormous collective moments.

The 1990s perfected the comfort show

Few decades produced as many endlessly rewatchable television shows as the 1990s.

Friends became one of the defining sitcoms of the era, turning six young adults in New York into globally recognizable characters. Seinfeld found comedy in everyday irritation and famously rejected the idea that sitcom characters needed to become better people.

The Fresh Prince of Bel-Air, Frasier and The X-Files all developed devoted audiences, while The Simpsons proved that an animated series aimed partly at adults could become a long-running cultural institution.

Television also became increasingly comfortable with serialized storytelling. Viewers weren’t always watching isolated episodes anymore. They were following characters and mysteries across entire seasons.

That change would become enormously important in the following decade.

The 2000s made television feel cinematic

The 2000s helped transform television’s reputation.

The Sopranos demonstrated that a television drama could offer the complexity and creative ambition associated with serious cinema. The Wire built an intricate portrait of institutions and urban life. Lost turned weekly television into a giant shared mystery that audiences attempted to solve online.

Then there was reality television.

Survivor, American Idol and numerous other reality formats became major cultural forces, proving that television didn’t always need professional actors or scripted stories to attract enormous audiences.

By the end of the decade, the distinction between prestigious film and prestigious television was becoming much less meaningful.

The 2010s belonged to prestige television and streaming

If the 2000s proved television could compete with movies, the 2010s pushed the idea even further.

Game of Thrones became global event television, with new episodes generating enormous amounts of conversation. Breaking Bad grew into one of the era’s most celebrated dramas, while Mad Men helped define the prestige-TV aesthetic.

At the same time, streaming changed how people watched.

Netflix’s original programming, including House of Cards and Stranger Things, helped normalize releasing entire seasons for viewers to watch whenever they wanted.

“Binge-watching” entered everyday vocabulary.

For perhaps the first time in television history, the schedule was no longer completely in control. The viewer was.

The 2020s turned television into everything at once

Television in the 2020s is harder to define because audiences no longer watch in one place.

Shows arrive through traditional networks, cable channels and numerous streaming services. Some release weekly episodes. Others drop complete seasons. International productions can become global hits almost overnight.

Squid Game demonstrated how quickly a non-English-language series could become a worldwide phenomenon. The Last of Us showed how far video game adaptations had evolved. Succession generated the kind of weekly discussion once associated with traditional event television.

Meanwhile, older shows constantly return through streaming, meaning someone discovering Friends or The Sopranos today can experience decades of television without waiting for reruns.

Television has become less tied to a particular time and place than ever before.

The way we watch changed as much as the shows

The biggest story across these decades isn’t simply that television became better or more sophisticated.

It became more personal.

In the 1950s, an entire family might watch the same television because there was only one screen in the house. By the 1990s, households had multiple televisions and dozens of channels. By the 2020s, different family members could simultaneously watch completely different shows on different devices.

We gained extraordinary choice, but we lost some of television’s shared rhythm along the way.

Still, every so often, a show becomes big enough to bring that feeling back. Millions of people watch, argue, quote characters and wait impatiently for the next episode.

The screens may have changed, but that part of television never really did.