We asked the BuzzFeed Community to tell us which TV moment was so clever, they couldn't believe someone actually thought of it. Here are the genius results.
🚨 SPOILERS AHEAD, PEOPLE 🚨
1. In Community, when they spent the first two seasons casually mentioning the name "Beetlejuice," and the third time, an actual Beetlejuice appeared in the background, just like in the movie.

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2. In How to Get Away With Murder, when the series ended the exact same way it began, only the professor changed from Annalise Keating to Wes's son, Christopher.

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3. In Fleabag, when the Priest could sense that Fleabag was breaking the fourth wall and looking at the camera, and then he did it too.

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4. In This Is Us, when Rebecca first saw Jack's lifeless body in the hospital, and there was a split-second flashback to young Jack, almost as if she were trying to preserve her memory of him.

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5. In Jane the Virgin, when the show finally revealed that Jane's son was actually the narrator, five seasons later.

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6. In The Good Place, when Eleanor realized that they were actually in the Bad Place, and everything you originally thought was a lie.

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7. In Sherlock, when Sherlock cleverly figured out Irene Adler's cellphone password.

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8. In Grey's Anatomy, when Dr. Bailey had to give birth without her husband in Season 2, so George stepped in for him. Then, 14 years later, Dr. Bailey returned the favor to Amelia when she had to give birth alone.

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9. In Brooklyn Nine-Nine, when Jake cleverly got Philip Davidson to reveal how he pulled off the perfect murder.

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10. In That '70s Show, when the series ended with everyone counting down to the new year, and the screen cut to black one second before it became the first day of the new decade.

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11. In The Haunting of Hill House, when the identity of the Bent-Neck Lady was revealed, and Nell realized that she was being haunted by herself the whole time.

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12. In Doctor Who, when River Song's true identity was revealed, and everyone found out that she was actually Amy's daughter.

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13. In Game of Thrones, when Arya tried to kill the Night King, but he pinned her arm back, so she dropped the dagger, caught it with her other hand, and stabbed him.

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14. In Black Mirror's "White Bear" episode, when Victoria found out that her punishment was basically to be part of an amusement park where people paid to watch her get "hunted" and tortured every day.

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15. In Sense8, when Will tricked everyone by physically standing in the same room as Whispers instead of appearing as an apparition through eye contact connection.

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16. In American Horror Story: Murder House, when Violet (and the viewer) realized that she was actually dead and her spirit was trapped in the house.

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17. And in Mad Men, when the show ended with Don Draper meditating on a mountaintop, and you originally think he's smiling because he found peace, but really it's because he just came up with the concept for a new Coke commercial.

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Note: Some submissions have been edited for length and/or clarity.