CULVER CITY, Calif. — A speeding Ford Fiesta passed the Sony Pictures gate and swerved into a parking lot across the street. It was 1:07 p.m. Was this finally him?

Frannie and Irwin don’t like to wait.

A young man in a tight sweater tumbled out of the car. Clutching a black binder overflowing with scripts, he started to walk-run toward the Culver City Senior Center. “Ta-da!” he said as he approached the entrance, adding a little ankle turn for effect. He hugged me — we had never met before — and apologized profusely for his harried schedule:

“Girl, it has been a morning.”

Matthew Hoffman’s basic story is as old as Hollywood itself. After studying theater at the Boston Conservatory, part of Berklee College of Music, he packed a suitcase and moved to Los Angeles in 2006, determined to become a star. He got a roommate and a restaurant job and started to audition.

But then life took an unexpected turn.

Mr. Hoffman, now in his late 30s (and fussy about it because of ageism in Hollywood), has become a celebrity, if not quite the kind he had envisioned. A few years ago he started to volunteer at the senior center as a type of acting coach. He helps people in their 70s, 80s and 90s perform scenes from films like “Casablanca,” “Brokeback Mountain” and “The Wizard of Oz,” even providing wigs and costumes for special videotaped performances, which they toast with champagne flutes filled with vanilla Ensure.

The classes, known as Tuesdays With Matthew and held once a week for an hour or so, have made him an essential part of the senior community in “the heart of screenland,” as Culver City calls itself.

Nick Pietroforte, 90, a retired musician, told me that Mr. Hoffman’s sessions and blindingly bright personality “make me forget my pain.” Mr. Hoffman is greeted like royalty when he walks into the senior center: hugs, cheers, giggles.

“He makes me feel seen,” said Fran Friday, 81, a former kindergarten teacher. “Just for a little bit, I am someone.”

‘Authentic Lives’

Mr. Hoffman has also received a lot from his “scene-iors,” as he calls them, and he may start to cry if you press him about it. His showboating is a bit of a facade, a way to mask a tender heart.

“This town can be very, very, very lonely, and when things have not been going well in my life, these people have always been there for me,” he said. “They also live authentic lives. They don’t care what anyone thinks. Do. Not. Care. That gives me the courage to be my high-haired, theater-loving self.” (Which has not always been easy!)

But now Mr. Hoffman has a conundrum: At long last, his Hollywood career has started to take off.

Acting was his first calling. As a teenager growing up in Lynbrook on Long Island, where his father was a hospital administrator and his mother worked in a brokerage firm, Mr. Hoffman landed the role of Young Scrooge in “A Christmas Carol” at Madison Square Garden. (Jesse Eisenberg was his understudy.)

Somewhere along the way, he decided to abandon his craft and turn toward “hosting” — talk shows, game shows, celebrity news shows.

Think Ryan Seacrest on the E! red carpet, except with jazz hands.

Earlier this year, CBS hired Mr. Hoffman as the snarky narrator for its “Love Island” reality series. (“Warning! The following program contains love, lust and tropical back-stabbing.”) Season 2 starts production in the coming months.

Mr. Hoffman will appear as a correspondent on the ABC News special “The Year With Robin Roberts.” Regal Cinemas pays him to interview celebrities at film junkets and premieres; the videos are distributed online.

So much work has started to come Mr. Hoffman’s way, in fact, that volunteering in Culver City has been taking a bit of a back seat, much to the dismay of Irwin Turek, 70, a retired county clerk who enjoys playing Dabney Coleman’s misogynistic role in “9 to 5” and channeling Burt Reynolds in “Smokey and the Bandit.”

“I’m always very disappointed when Matthew can’t come, which has been quite often this year,” Mr. Turek said.

“I’m worried that he will forget about us.”

No Love for Meryl

Tuesdays With Matthew sessions, which now take place on Wednesdays, typically involve routine line readings. More elaborate scenes with props and silly costumes (Bernice playing a pesky iceberg in “Titanic,” Millie as a swaying ear of corn in “The Color Purple”) require a lot more prep time. Because he is a volunteer at the center, Mr. Hoffman only does those a few times a year, and less so lately.

On a recent afternoon, about 20 seniors gathered in a room next to the cafeteria. The scent of turkey chow mein lingered in the air, but nobody seemed to mind. They were excited to see Mr. Hoffman and find out what scenes he would pluck from his binder for them to tackle.

First up: Ms. Friday and Mr. Turek. Mr. Hoffman called on them to perform a scene from “A League of Their Own,” the 1992 comedic sports drama starring Geena Davis and Tom Hanks.

Mr. Turek, in a plaid yellow shirt and tan trousers, and Ms. Friday, decked out in a bright blue sweater, chunky jewelry and striped pants, ambled to the front of the room. Mr. Hoffman handed them their lines.

“One, two, three — action!” he shouted, standing on tiptoe and spreading his arms like he was about to take flight.

Ms. Friday started to feign sobbing. She rubbed her eyes and sniffled.

“There’s no crying in baseball,” Mr. Turek growled.

Everyone clapped heartily when they were finished; one person banged approvingly on a walker. “That was some of the best crying we have ever had,” Mr. Hoffman said, running over to Ms. Friday. “I have goose bumps! Look at them!” He pulled up the sleeve of his sweater and extended his arm.

“I love you, Matthew,” she said, giving him a hug. “I feel about 35 after your classes.”

“I love you, too, Frannie.”

Mr. Hoffman returned to his binder and flipped madly through the pages. “Aha! Here were go,” he said. “Who here loves Meryl Streep?”

Crickets.

“Nobody? Not a single person? I thought everybody loved Meryl,” Mr. Hoffman said, pretending to be traumatized. He flipped some more. “How about old trusty? ‘Steel Magnolias.’”

Mr. Turek sighed loudly. “Matthew, how about something by Clint Eastwood,” he said.

“‘Tootsie’?” Mr. Hoffman countered.

“You always want to do that scene,” Mr. Turek said

Ms. Friday decided to chime in. “I would like to do more Mae West,” she said. “I love men’s legs, comedy and sunny weather — the sunnier the better, because that means the legs are out for me to see.” She giggled.

“Louder!” shouted someone with hearing aids in the back.

Mr. Hoffman regained command of the room by zeroing in on a quiet woman in her early 80s named Irene. She had been coming to class for months but had never participated. “You want to come up?” Mr. Hoffman asked her.

It took some coaxing. But before long she was doing a monologue from “Sunset Boulevard.” “Did you have fun?” Mr. Hoffman asked, giving her a high five.

“I was scared,” she said.

“You don’t even know how good you are!”

They both beamed.

‘Transformed’

“If he ever left, I’d have a disaster on my hands,” Jill S. Thomsen, the recreation and community services coordinator at the center, told me one afternoon in November.

I don’t think she was exaggerating. Mr. Hoffman has long been more than a volunteer acting coach to the seniors who cycle through Ms. Thomsen’s hallways. He doubles as a friend and confidant — and a surrogate son, perhaps — helping them cope with the daily indignities of growing older. He listens to their stories and treats them like contemporaries.

“I was sick recently and missed a few weeks, and Matthew called me to check on me,” Mr. Turek said. “It made me feel like I was important enough for someone to worry about.”

Funerals, alas, are part of this gig. One center mainstay, Dee Burress, a plain-spoken woman who liked to perform, died last year at the age of 76. Mr. Hoffman brought flowers to class and placed them on her preferred seat. He keeps her photo on the cover of his script binder.

“It sounds lofty and weird, but Tuesdays has transformed me as a human being,” he said. “I discovered who I am.”

The meandering path that brought Mr. Hoffman to the Culver City Senior Center started, strangely enough, with the avatar of the Metropolitan Museum’s Costume Center (and the high priestess of Condé Nast): Anna Wintour.

After college, he had moved to New York and set his sights on Broadway. One day, while hanging out in a coffee shop, he met Ms. Wintour’s daughter, Bee Shaffer. They became friends.

When her mother had an extra ticket to the Tony Awards in June 2005, she offered it to Mr. Hoffman. During a commercial break, that year’s host, Hugh Jackman, appeared onstage at Radio City Music Hall to keep attendees entertained. Guess who got pulled out of the crowd to help?

Page Six wrote a blurb about it. Mr. Hoffman decided that was his big break. He flew to Los Angeles and, carrying copies of the newspaper item, tried to get an agent. One that he met with offered some tough love: If he ever wanted to get a host job, he needed to put together a video résumé that showed himself engaged in witty repartee with people.

“I had no one to interview and was sort of crushed,” Mr. Hoffman recalled. Then he passed a senior center near Beverly Hills. A light bulb went off.

Mr. Hoffman hit it off with some of the people he encountered at the center, and they invited him back. His visits evolved into Tuesdays With Matthew, moving locations (and days) after one participant, Mr. Pietroforte, discovered the livelier Culver City Senior Center.

After Mr. Hoffman started posting videos of special performances on YouTube as a way to raise money for Meals on Wheels, the directors of senior centers in other cities contacted him: Would he come do one of his costumes-and-props sessions there?

Last year, he agreed, traveling within California to a center in Bakersfield and one near Fresno. He found a sponsor for the Fresno trip, raising $5,166 for Meals on Wheels.

But his work schedule has put the brakes on his fund-raising. This year, he has only raised about 35 percent of his goal.

“Love Island,” for instance, required all of Mr. Hoffman’s attention over the summer. Even before that, he was stressed out by trying to balance his career with his volunteer work. After a class in the spring, he sat on a bench outside the center and broke down about it.

“I’m at a big crossroads personally and professionally,” he said, wiping away a tear. “These people have been my family out here.”

He drove away. The center seemed to turn from Technicolor to black and white.

My phone rang. It was a steadier Mr. Hoffman. “I don’t care how busy I get,” he said. “I will somehow make it work. I am not leaving them.”