NEW YORK (AP) 鈥� Tune into the Oct. 11, 1975 premiere episode of 鈥淪aturday Night Live鈥� 鈥� then without 鈥渓ive鈥� in its name 鈥� and you may be instantly surprised at some of the bones of the show that are still intact today.

There's the cold open skit, featuring cast members and Michael O'Donoghue. At its end, Chevy Chase gingerly walks by the prone bodies of the two actors, playing dead, for the very first call of 鈥淟ive from New York, it's Saturday night!鈥�

NBC is rebroadcasting that episode Saturday, part of a feast of that includes a three-hour special on Sunday reuniting dozens of past cast members and friends and a homecoming concert from Radio City Music Hall being livestreamed Friday night on Peacock.

The original cast surely would have mocked the display of showbiz excess, much like the actors in last year's fictional backstage depiction of opening night in couldn't hide their disgust at Hollywood legend Milton Berle.

Not ready for prime time? Hardly

Back then, they were Success has long since made a mockery of that name. Among viewers under age 50, the late-night show is more popular than anything NBC airs in so-called prime time, and that doesn't even reflect the way many people experience it now, through highlight clips online.

鈥淪aturday Night Live鈥� is the engine of comedy, minting generations of stars from Belushi to to to Adam Sandler to Will Ferrell to Amy Poehler to to Kate McKinnon to Bowen Yang. It launched movie franchises too numerous to mention, and NBC's late-night comedy lineup of Jimmy Fallon and Seth Meyers traces its lineage to 鈥淪NL.鈥� It's still the first place people turn when they want to make comedic sense of current affairs.

At its center, then and now, is the inscrutable figure the executive producer who was 30 during that first season and turned 80 last fall 鈥� on a show night, naturally.

Michaels left 鈥淪NL鈥� for five years and, upon his return in 1985, hit upon the formula that guaranteed its continued relevance.

He recognized, as author Susan Morrison writes in the biography 鈥淟orne: The Man Who Invented Saturday Night Live,鈥� due to be released Tuesday, that 鈥渏ust about every person who has ever watched SNL believes that its funniest years were the ones when they were in high school.鈥�

That means constantly moving forward, always adding new blood, even being ruthless about it. That means trusting young writers to keep the cultural references relevant, That means that Michaels and his good friend, singer Paul Simon, probably haven't heard of but his people tell him are on the cutting edge.

It's not perfect. It never was.

鈥淭he history of the show reads like an EKG,鈥� said James Andrew Miller, co-author with Tom Shales of the 2002 book, 鈥淟ive From New York: The Complete, Uncensored History of Saturday Night Live.鈥� 鈥淭here are fantastic years, there are growing years, there are years to make you carsick, there are years to make you wonder if it should still be going on.鈥�

Substitute the word 鈥渟hows鈥� for 鈥測ears鈥� in that quote, and it still makes sense.

Creating viral moments before 鈥榲iral鈥� was a thing

鈥淪aturday Night Live鈥� is often 鈥� usually 鈥� wildly uneven. But it Garrett Morris' news for the hard of hearing, Murphy's irascible Gumby, 鈥淟azy Sunday,鈥� the cowbell sketch, Tina Fey's impersonation of Sarah Palin: The memories alone produce laughs. The duds, the ideas that never took off or hosts who couldn't rise to the challenge fade away. Or maybe they're the price of genius.

It can be easy to lose sight of how hard this actually is, said Bill Carter, veteran chronicler of television comedy and author of 鈥淭he Late Shift: Letterman, Leno, and the Network Battle for the Night.鈥� A 90-minute program is written from scratch every week, sets are constructed in a New York office building, hosts of various degrees of talent accommodated.

Ready or not, the The clock is unforgiving.

鈥淚t's a different creative enterprise, every show,鈥� Carter said. 鈥淭hat's why it is good and bad, but it's also why it's exciting ... 鈥楲ive,鈥� that is the essential feature of the show. You know when you are watching that it is actually happening in New York City right now.鈥�

Only so much polish is possible. Someone may flub a line, or get the giggles. may rip up a picture of the pope, or Ashlee Simpson's lip-sync might fail.

鈥淪aturday Night Live鈥� has leaned more into its history in recent years. Alumni make and spotting unbilled cameos has become sport. The of guest hosts, while a joke, treads the line of smugness.

It may seem like a franchise with no foreseeable conclusion, and is even built for that. Michaels will have more to say about that than anyone. The backstage boss is also the longest-running on-screen character; his appearance as a straight man to then-New York Mayor Rudy Giuliani on the first show after the Sept. 11 attacks is one of 鈥淪NL's鈥� .

鈥淐an we be funny?鈥� Michaels asked.

Replied Giuliani: 鈥淲hy start now?鈥�

How long will Lorne Michaels stay with the show?

Observers say Michaels has stepped back a bit, relying more on the capable team that he's built. There's no indication that his eye for spotting talent has diminished. Those who have seen it say that his most fearsome skill 鈥� making a series of instant decisions between the show's dress rehearsal and performance, shortening or lengthening skits, moving and changing them to produce the broadcast viewers see 鈥� is flourishing.

The years leading up have been filled with speculation that this will be when he steps down, talk he's even fueled himself in the past. But he hasn't discussed it, or even given interviews surrounding the festivities. The subject is the focus of 鈥淎fter Lorne,鈥� a new piece in New York magazine, where author Reeves Wiedeman describes Michaels as a man of mystery, sometimes an intimidating force, to those around the show.

Whoever replaces him 鈥� names like Fey, Meyers and Colin Jost have been mentioned 鈥� would likely face crushing pressure. At a time when broadcast television is fading, NBC would be sorely tempted to cut costs around the program in a way they haven't with Michaels in charge, Miller said.

If the 50th anniversary were to trigger his exit, Carter said that likely would be known by now.

鈥淚t's his life,鈥� he said. 鈥淲hy would you walk away from your life if you don't have to? This was a special, unique thing that he created, and if you enjoy doing it, which I think he still does and can do it, I don't see any reason he should leave.鈥�

Someday, that time will come. In the meantime, enjoy the show.

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David Bauder writes about the intersection of media and entertainment for the AP. Follow him at and