'30 Rock,' Tina Fey's sitcom about an 'SNL'-like sketch comedy show, originally went head-to-head with Aaron Sorkin's markedly similar 'Studio 60 on the Sunset Strip.'

Johnny Carson, host of "The Tonight Show," asked NBC to move his reruns to weeknights instead of weekends. That freed up a weekend slot and the network decided to try a new live show.

Another show already owned the title: the short-lived "Saturday Night Live with Howard Cosell." The variety show only lasted one season and was widely panned, despite featuring several talented comedians—like Bill Murray, Christopher Guest, and Billy Crystal—who'd later be stars on "SNL" ... after officially changing its name.

Sketch comedy relies on pacing, with scripts that hit certain beats. "SNL" often greenlights sketches that lean into a particular formula that features two "turns," or unexpected events that disrupt the "base reality" of the story.

Saturday Night Live has been a fixture of American comedy since 1975. Created by Lorne Michaels and Dick Ebersol, the show was designed as an alternative to late-night reruns, blending live sketch comedy, political satire, and celebrity impressions.

As “SNL” became more popular, Lorne Michaels sensed an opportunity to turn some of the show’s most popular sketches and characters into feature films. It’s a strategy that had mixed results: “Wayne’s World” and “The Blues Brothers” are modern classics, while others, like “It’s Pat” and “The Ladies Man,” performed poorly with audiences and critics alike.

Longtime director David Silverman and showrunner Matt Selman walk you through some of the show's biggest turning points, from the early days on "The Tracey Ullman Show" through its biggest guest stars and eerily accurate predictions.

Kristen Wiig plays Minnelli in the skit, poking fun at the Broadway star's extravagance and onstage presence. Minnelli is unable to perform regular tasks without whipping out Fosse's dance moves.

"Saturday Night Live" has held a unique role in the cultural zeitgeist since its founding in 1975, providing a national stage of silly mockery and filling our Sunday feeds with the latest impressions of public figures. In its 50th year, 50 cast members weigh in on who their favorite casts and individual comedians were. Read their various opinions here.

When NBC decided to adapt "The Office" for American audiences, they auditioned in several comic character actors, including Seth Rogen, Bob Odenkirk, Kathryn Hahn, and Adam Scott. Though those actors didn't land the parts, they did end up with major roles in other critically-acclaimed movies and TV shows, including "Knocked Up," "Abigail All Along," "Better Call Saul," and "Severance."

Before it was a standalone sitcom, "The Simpsons" began in 1987 as a series of interstitials on "The Tracey Ullman Show," a short-lived sketch comedy show. You'll notice some slight differences—off-kilter voices, oddly drawn characters—but the series' premise was there, leading Fox to spin it off into its own show in 1989.

This list gives an overview of the strengths, weaknesses, and nuances of every one of the 50 seasons of "SNL." Helpfully, it also includes plenty of great sketches, acting as a compilation of the legendary show’s definitive moments.

Lorne Michaels left the show in 1980, citing burnout and disagreements with network executives. He tried several gigs, including a sketch comedy show called “The New Show” that was strikingly similar to “SNL,” but nothing stuck. He returned to "SNL" in 1985.

"Almost Live!" began in 1984 as a Sunday evening talk show before evolving into a sketch comedy show that served as the lead-in for "Saturday Night Live" on NBC's Seattle affiliate station. Besides Nye, TV stars Joel McHale and Lauren Weedman were regular cast members.

The show is pitched, written, and designed in a week. Tuesdays feature infamously long writing sessions that usually stretch into Wednesday mornings. Fridays include shooting for digital shorts and an initial run-through of live material. Before Saturday's live show, there's an extended dress rehearsal.

In its almost four decades on the air, "The Simpsons" has played a role in shaping the arc of American comedy. This list from The Ringer ranks the show's episodes that played the biggest role in that process, featuring exemplary scripts from Conan O'Brien, Greg Daniels, and more.

This documentary explores the wild trajectory of the show, from Matt Groening's early underground cartoons to its status as a groundbreaking pop culture phenomenon.

“SNL” producers aimed to cast relative newcomers for the show’s first season, convinced that amateurs would infuse the show with the countercultural spirit Lorne Michaels envisioned.

The fake band might be best known for "This is Spinal Tap," 1984 movie that effectively created the comedy mockumentary, but the premise began with an appearance on a short-lived ABC show called "The TV Show."

After debuting in 1998, the comedy ran for six seasons on HBO, offering a frank take on the lives of well-to-do single women. Critics argue the show established a model for other shows to follow, including those that aired on HBO, like "Girls" and "Insecure."

Michaels was a costar on "The Hart and Lorne Terrific Hour," a popular show on the Canadian network CBC. As these clips show, it was a standard variety show, something Michaels would intentionally react against with "SNL."

Every episode, "SNL" welcomes a host and a musical guest, bringing a wild range of personalities to the stage at 30 Rock. That’s evident by browsing this comprehensive list of every “SNL” episode, which features mind-boggling combos, including Buck Henry and Sun Ra, Helen Hunt and Snoop Dogg, and Jackie Chan and Kid Rock.

HBO’s The Sopranos followed New Jersey mob boss Tony Soprano as he struggled to balance his violent criminal life with his personal and family issues. Its blend of crime drama, pitch-perfect comedy, and intergenerational family dynamics made for a complex show not easily reduced to typical genre tags.

After several years of middling material and low ratings, showrunner Lorne Michaels returned in 1985 and brought a cast of Hollywood A-listers, including Anthony Michael Hall and Robert Downey Jr. The season is now called the “Weird Year" due to the use of more established actors, whose connection with the audience was limited.

HBO’s success in the early 21st century bred plenty of imitators, who were now more willing to embrace darker, more challenging series like “Weeds,” “Mad Men,” “Breaking Bad,” and “House of Cards.”

Starting from season 1 in 1975, scroll through the years of the show's comic actors in this well-designed visual record and get a sense of their relative endurance on the show. Stop to click and read more on that season's highlights or the specific career arc of the actor.

This list ranks the show’s biggest controversies over five decades, including Sinead O’Connor’s infamous shredding of the Pope, Elvis Costello’s abrupt set change, and Fear trashing Studio 8H.

When Jesse Eisenberg hosted "SNL" in 2011 ahead of an Academy Awards appearance for his portrayal of Zuckerberg in "The Social Network," Zuckerberg actually came on stage. That was the first time the two met, and many viewers said the interaction was awkward. Eisenberg tried to meet Zuckerberg before filming "The Social Network," but his producers told him he couldn't for legal reasons.

Fans of “Saturday Night Live” might be familiar with Studio 8H, which has only changed slightly over the show’s five decades. This video tour from Architectural Digest provides access you won’t find on the weekly broadcast, with cast members Heidi Gardner, Chloe Fineman, and Ego Nwodim walking you through makeup, dressing rooms, and more.

The legendary and long-running animated show debuted as a series of shorts on "The Tracey Ullman Show" in 1987. Years later, after a standalone "The Simpsons" series became a breakout success, Ullman sued 20th Century Fox, the show's parent company, claiming she was owed royalties for merchandise based on the show.

"SNL" obsessives are familiar with the show's cue cards, which occasionally appear on air in fourth-wall-breaking segments. They might even recognize Wally Feresten, the man who's been handwriting (and holding) them since 1990. This podcast interview delves into Feresten's curious life behind the scenes at "SNL" and his unexpected turns in front of the camera.

After including overt political protests in their performances, rumors swirled that Sinead O'Connor and Rage Against the Machine had been banned from the show. (People said the same about rock band the Replacements, but that was for on-air drunkenness.) Showrunner Lorne Michaels, however, claims no musical guest has ever been banned.

Producers of “Twenty-One,” which featured two contestants competing from separate isolation booths, knew the quiz show format could use storytelling in the same way that any fictional program could. They found a perfect narrative in the matchup between Charles Van Doren, an all-American Columbia University instructor, and Herb Stempel, an arrogant Queens native. Stempel intentionally lost the game, pretending not to know the answer to a question about his favorite movie, “Marty.”

"Generally when people talk about the best cast I think, 'Well, that's when they were in high school,'" Michaels told "Today" in 2015. "Because in high school you have the least amount of power you're ever gonna have. ... Staying up with friends later on a Saturday is great, and people attach to a cast."

"The Simpsons" has always been a slyly sophisticated show and has featured more than a few references to complex mathematical concepts. That's largely due to its writers' room, which has featured more than one writer who studied math before transitioning to comedy.

The strip began in 1977 as a self-published book featuring disturbing-looking rabbits navigating the indignities of life in Los Angeles, where Groening had recently moved. It was picked up by the Los Angeles Reader in 1980 and then syndicated by over 250 newspapers by 1986. Eventually, it caught the eye of James L Brooks, who was looking for a cartoonist to create sketches for "The Tracey Ullman Show" for Fox.