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The Greatest ‘Did That Just Happen?’ SNL Celebrity Cameos and Iconic Sketches

The Studio 8H stage is where comedy legends are born and Hollywood royalty drops by unannounced. This is the chronicle of spontaneous genius and the most unforgettable moments of SNL.

Pedro Pascal and Marcello Hernández at an event for Saturday Night Live.
© IMDbPedro Pascal and Marcello Hernández at an event for Saturday Night Live.

The clock striking 11:30 PM on a Saturday night is more than just a time; it is a portal. For nearly five decades, the stage at Studio 8H in Rockefeller Center has served as the unpredictable nexus where celebrity spectacle meets sharp, absurdist humor.

No other program possesses the same raw, live energy—a glorious high-wire act where a single unscripted moment or the surprise appearance of an A-list icon can instantly rewrite comedy history.

These are the flashes of brilliance that transcend a weekly variety show, becoming cultural timestamps that viewers discuss around office water coolers and on social media for years to follow. The true magic lies in the carefully crafted SNL sketches.

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Robert De Niro and Joe Pesci Confront Their Impersonators (Cameo)

(Source: IMDb)

(Source: IMDb)

During a parody of “The Joe Pesci Show,” the real Robert De Niro and Joe Pesci made a chillingly funny, unannounced drop-in. Seeing the notoriously intense actors interrupt Jim Breuer’s impression and directly threaten their comedic doubles created a priceless, high-stakes moment of meta-comedy the audience will never forget.

More Cowbell (Sketch)

This sketch, starring Will Ferrell as the over-the-top percussionist Gene Frenkle and Christopher Walken as the obsessive producer Bruce Dickinson, is often hailed as SNL’s greatest moment. The scene’s brilliant, escalating absurdity and Ferrell’s complete commitment to his tight shirt and absurd instrument cemented “I got a fever, and the only prescription is more cowbell!” as an international comedy catchphrase.

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Matt Foley: Van Down By The River (Sketch)

Chris Farley’s explosive, sweat-soaked motivational speaker is the quintessential SNL physical comedy triumph. Farley’s signature sketch became a cultural touchstone by showcasing the character’s desperate intensity, famously warning teenagers about his fate—living “in a van down by the river”—a quote that has defined his chaotic genius for decades.

Barbra Streisand Crashes “Coffee Talk” (Cameo)

The unannounced entrance of Barbra Streisand (and Madonna) during this beloved sketch is comedy gold. Mike Myers, playing the Streisand-obsessed host Linda Richman, was so utterly shocked by the diva’s appearance that he visibly broke down and cried on live television, creating one of the most genuine and heartwarming moments of surprise the show has ever captured.

Ariana Grande’s Impressive Impersonations (Musical Guest/Sketch)

(Source: IMDb)

(Source: IMDb)

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When Ariana Grande pulled double duty as host and musical guest, she delivered a masterclass in vocal mimicry, particularly during the “Tidal” sketch. Her astonishingly accurate impressions of pop superstars like Britney Spears, Rihanna, Celine Dion, and Whitney Houston were so spot-on they transcended mere parody, solidifying her status as a comedic and vocal powerhouse.

David S. Pumpkins (Sketch)

Featuring host Tom Hanks, this sketch is a masterclass in committed absurdity. Hanks’ David S. Pumpkins, a dancing oddity in a jack-o’-lantern suit, completely mystified the audience and the cast, becoming an instant, unexplainable cultural phenomenon that proves sometimes, comedy doesn’t need a punchline—it just needs a strong dose of surreal commitment.

Wayne’s World (Sketch Series)

Starring Mike Myers and Dana Carvey as basement-dwelling metalheads Wayne Campbell and Garth Algar, this public-access television show segment exploded beyond Studio 8H. It perfectly captured the slacker rock culture of the late 80s and early 90s, becoming the first sketch to successfully spin off into a major feature film franchise.

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Celebrity Jeopardy! (Sketch Series)

This recurring game show parody, led by Will Ferrell as the increasingly exasperated host Alex Trebek, is a template for sustained brilliance. It is best remembered for Darrell Hammond’s belligerent and hilariously ignorant Sean Connery, whose constant misreading of the categories made the sketch a comedy institution.

Brad Pitt as Dr. Anthony Fauci (Cameo)

During the emotional and isolated “SNL at Home” era, the unannounced appearance of movie star Brad Pitt portraying then-White House Chief Medical Advisor Dr. Anthony Fauci was a cultural event. The sincere performance—which earned Pitt an Emmy nomination—provided the nation with a much-needed moment of levity and calm during the early chaos of the pandemic.

Protective Latina Mothers (Sketch)

(Source: IMDb)

(Source: IMDb)

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In a viral sketch that perfectly blended star power and relatability, hosts Pedro Pascal and Bad Bunny portrayed the two most aggressively protective and gossiping Latin mothers at a party. The sheer chaos and hilarity of the sketch resonated deeply with audiences, instantly proving the electric comedic chemistry between the two international superstars.

Ariadna is a versatile journalist who covers a broad spectrum of sports topics and creates evergreen content. Her career in journalism began in 2021 at Indie Emergente, a digital music magazine, where she honed her skills in writing and reporting. In 2023, she expanded her repertoire by contributing to Spoiler Latinoamerica, where she created general culture content, before joining Spoiler US in 2024 to write entertainment pieces. With over four years of experience across different media outlets, Ariadna brings a wealth of knowledge and an expanding influence to the field of journalism.

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