It's OK, we get it: An 81-year-old man passed away on Tuesday (July 19), you're young enough that you don't remember the heyday of sitcoms like "Happy Days" and movies like "Pretty Woman" and "The Princess Bride," and you're just eager to get back to seeing if there are any further developments in the Taylor/Kim K feud.

But here's what you might not understand: This wasn't just any 81-year-old man. Garry Marshall had a seven-decade career where everything he seemed to write, direct, produce or act in was like a drop in the pop culture pond, rippling its way across Hollywood and society at large. Even if you've never seen anything he's done, you've undoubtedly felt his influence.

RELATED: ‘Pretty Woman,’ ‘Happy Days’ hit-maker Garry Marshall dies at 81

How is this possible? Read on for a list of 10 pop culture touchstones that simply would not exist had Marshall not lived his tremendously influential life.

Robin Williams

In 1978, Williams was little more than a stand-up comedian with some buzz around him. When Marshall met with him for an audition and asked him to take a seat, Robin Williams sat on his head. Marshall's delightfully warped sensibility quickly came up with an idea: Cast him as a manic alien named Mork, and have him invade the lives of TV's first family in 1950s Milwaukee.

Mork's "Happy Days" battle with the Fonz (Henry Winkler) was such a popular episode that the character landed his own sitcom (1978-82), which Williams quickly outgrew as his Hollywood career skyrocketed. Think about all those classic Robin Williams movies that have impacted our lives -- "Aladdin," "Mrs. Doubtfire," "Good Morning Vietnam," "Dead Poets Society," "Good Will Hunting" -- and how none of them may have existed if Garry Marshall hadn't once asked Williams to take a seat.

The four-camera sitcom

It's easy to sit back on your couch, enjoy your shows and not think about how the sausage is made. But consider this: If you've ever loved "The Cosby Show," "Seinfeld," "The Golden Girls," "The Big Bang Theory" or countless other classic sitcoms, you are a fan of the four-camera format pioneered by Marshall.

In the late 1970s, the Bronx-born TV titan ruled the airwaves with hits like "Laverne & Shirley." So, when he got word that his spastic "Mork & Mindy" star Williams was having trouble staying on his marks while he improv'd wildly, Marshall came up with a brilliant idea that seems so simple in retrospect: Take a fourth camera, call it the "X" cam, and keep it focused on the star at all times.

Those classic "Friends" reaction shots from Matthew Perry? So many of those George Constanza moments? Many simply wouldn't look the same if those shows had stuck to the static camera set-ups of generations past. So, next time Sheldon on "Big Bang" drops a punchline, be sure to think of Garry Marshall and his X cam.

Jumping the shark

"Happy Days" was a show that embraced its silliness, and cartoonish elements like Fonzie's kryptonite-like aversion to raw liver or the aforementioned Mork episode made it endearing -- and it oozed Garry Marshall, through and through.

But Marshall may have gone too far with the now-infamous Season 5 episode that has Arthur Fonzarelli jumping a shark enclosure on water skis while wearing a leather jacket. The scene singelhandedly had Fonz crossing over from a street-wise greaser with charm to a seemingly-invincible superhero -- a point of no return for the beloved character.

The phrase "jumping the shark" was coined years later as a backhanded tribute to the episode. Signifying the moment in a piece of entertainment where its quality begins to decline, it is now common practice to debate when anything from "American Horror Story" to "The Simpsons" to an actor's career (or even something like a car) jumped the proverbial shark.

Weezer's 'Buddy Holly' video

Quite possibly the last great gasp of the days when MTV played music videos, Weezer's 1994 clip directed by Spike Jonze was a masterpiece of mash-ups before the Internet made them a daily occurrence. The network unveiled the video with much fanfare, and it was surreal to watch Rivers Cuomo and his bandmates interact with Richie Cunningham, Potsie, Ralph Malph and other Marshall creations who were permanently stuck in the '50s ... and in many ways, the '70s. The song became a massive hit, largely because of the video.

All these years later, "Buddy Holly" is still resonating within pop culture, and the video is every bit as entertaining because it knowingly embraces all those Marshall elements.

Kramer

When Hulu recently created an exact replica of Jerry's "Seinfeld" apartment to celebrate the show, one tourist after another took turns making the famous "Kramer entrance" through the door.

Think about all the laughter those entrances have brought people over the years. Now, think about the fact that Marshall came up with the gimmick two decades prior for "Laverne & Shirley." Without Lenny and Squiggy, it seems, Kramer just wouldn't have been the same.

'Arrested Development'

If Garry Marshall had never lived, is it possible that Mitchell Hurwitz would have been able to conceive, create and execute one of the funniest TV shows of all time? Possibly.

But it's also possible that Ron Howard, Henry Winkler and Scott Baio wouldn't have had their careers without "Happy Days," which would mean that they wouldn't have been part of the project. Of course, Howard was far more than just the narrator; he was the show's executive producer who played a massive part in getting it on the air. But beyond that, imagine "Development" without its voice, without Barry Zuckerkorn, without Bob Loblaw (!) and it simply isn't "Arrested Development" anymore.

Scott Baio at the RNC

Hey, you take the good, you take the bad.

If Garry Marshall had never cast 16-year-old Baio as the Fonz's heartthrob cousin Chachi Arcola on "Happy Days" (and later, perhaps the most infamous ill-conceived spinoff of all time, "Joanie Loves Chachi"), it's unlikely that he would have become famous enough to warrant an appearance at the 2016 Republican National Convention. But sure enough, there he was Tuesday, supporting Donald Trump and arguing with Tamron Hall about whether he had called Hillary Clinton the "c-word."

Broad City's 'Pretty Woman' episode

Just last year, Ilana Glazer and Abbi Jacobson appropriated Marshall's 1990 runaway hit for a hilarious scene where they depicted the rush of selling clothes to a thrift store. Come to think of it: How different would the pop culture landscape be if Marshall hadn't made Julia Roberts a superstar?

Paul F. Tompkins' impressions

Ultimately, Garry Marshall's greatest asset may have been his larger-than-life personality. Make no mistake -- even when he was behind the camera, his exuberant nature and gift for storytelling rubbed off on his actors.

That personality was well harnessed in small on-camera doses by "Lost in America," "Chicken Little" and "Soapdish," among other projects. But as you can hear below, Marshall's greatest work may have been the 81 years he spent crafting himself -- and impacting the world around him.