A recurring gag in action or speculative fiction works where something absolutely incredible is happening outside, but then we cut to the inside of an office building and we see that the janitor is completely oblivious to what is going on around him, either because he has his headphones on, because his back is turned or because the cleaning equipment he is operating is too loud.
Not to be confused with The Almighty Janitor, who sees and knows all.
- True Lies: The janitor doesn't notice the jet flying around outside until it crashes into the window.
- The Amazing Spider-Man: Stan Lee in his obligatory cameo listening to music and nonchalantly whistling as Spider-Man and the Lizard duke it out behind him, knocking down shelves and smashing lights. A large table comes hurtling toward him, but Spider-Man manages to grab onto it with a web-shot and yank it away. Stan never notices.
- Devil: A man falls off the top of a building while the janitor's back is turned to the window.
- Ghost Rider: The eponymous biker rides down the side of a office building, shattering glass windows all the way down, and the janitor, wearing headphones again, doesn't notice the broken glass until after GR is long gone.
- The Day After Tomorrow: A tornado suddenly and severely damages a building. The janitor doesn't notice until the lights go out. Justified in that he is in a windowless hallway. The janitor then opens the nearest door and sees that half of the building has been sheared off by the wind.
- Grosse Pointe Blank: The Ultimart clerk plays an arcade game while a gunfight rages all around him. He doesn't notice until the hero yanks him out of the shop before it explodes.
- Super 8: Breen misses the sheriff being taken by the monster just behind him while listening to his Walkman.
- Harry Potter and the Deathly Hallows Part 1: While the hero trio is attacked by Snatchers at the diner, the waiter/cook is in the kitchen, blithely listening to music on her headphones.
- Gets egregious in X2: X-Men United, when a janitor walks past Mystique disguised as him.
- There is one buffing the floors in I Am Number Four, but he dies with the floor buffer polishing the school floor with his blood.
- The custodian in Gutterballs doesn't realize a girl is gang raped nearby, due to his headphones and floor buffer.
- A victim's secretary in Jolly Roger: Massacre at Cutter's Cove is unable to hear her boss being murdered in the next room due to rocking out on her headphones.
- Parodied in Amazon Women on the Moon, when Arsenio Hall's luckless character ends up falling to his death from his apartment in a shower of broken glass, a nearby street-sweeper reacts with a "feels like rain" gesture.
- In The Tournament, the service station attendant has his earbuds in and is looking away from the monitors, and so somehow fails to a notice a fight to death going on behind him between Lai Lai and Miles, despite them crashing through the glass door into the shop.
- In Tower Heist, a maid wearing headphones while vacuuming an apartment fails to notice the Ferrari being lowered outside the window behind her.
- Coupling: In the last episode, Jane is so wrapped up in cleaning her flat (and setting the mood) for sex that she doesn't realize Oliver is trying oh so desperately to get in. It's only revealed toward the end of this scene that she's wearing headphones, which is why she hadn't noticed his clawing at the door, hanging outside her window, or trying to grab her from the mail slot.
- Pushing Daisies: Olive breaks into a musical number while closing up the pie shop. Toward the end, the janitor pulls off his headphones, interrupting her song, and asks if she said something.
- Chuck: In the episode "Chuck vs. the Push Mix", the camera shows a janitor buffing the floor in the foreground, and the long-awaited proposal from Chuck to Sarah in the background.
- Doctor Who: The TV Movie: The Doctor and Grace pull off a dramatic escape from the Institute while being chased by the Master and his minion. The janitor fails to notice.
- On Gotham, Gerald Crane pushes an acrophobic victim off a building tethered with a very long rope, and a hotel maid he falls past is too busy to notice.
- In an episode of Supergirl, the eponymous character stops a helicopter from crashing into a building. Inside the building is a janitor listening to music while vacuuming, who fails to notice the helicopter. Naturally, Supergirl stops it before it hits the room he's working in.
- Law & Order: Criminal Intent: In "Major Case", the Victim of the Week screams and pounds desperately on the window when she sees a man walking his dog pass by outside. A cut to the outside shows the man has ear buds in and is oblivious to the desperate screams and poundings, as the killer drags the girl away from the window and back into the darkness of the house.
- Lampshaded in a clip on World's Dumbest... in which the police are chasing a criminal into a government building...and some guy is nonchalantly shoveling snow the whole time.
Mike Trainor: (as snow-shoveler) This does not affect my day.
- In Episode 3 of the Telltale game of Back to the Future, Marty crashes the DeLorean into a billboard in A-1986. A young woman picking up trash on the highway (who later turns out to be none other than Marty's girlfriend Jennifer) has her back turned and her headphones on.
- Implied one in the process of taking place during Act 5 of Quantum Break, as Jack is storming Monarch HQ. Due to the Fracture, a train is in the process of crashing into the building when a stutter hits. Jack can find a janitor behind the escalators, oblivious to both the train crash and the fighting Jack has been having with Monarch's stutterproof Mooks, and Jack will remark on the shock he'll have when time restarts.
- The theatrical trailer for Overwatch involves a massive teamfight with Tracer and Winston vs. Reaper and Widowmaker in the middle of a museum. Where's security? Obliviously playing Hearthstone on his tablet.
- The janitor in The Mercury Men is oblivious to the alien invasion going on in the building - that is, until he gets zapped by them.
- The Spectacular Spider-Man: In the episode "Nature Vs. Nuture", Spidey stops a helicopter from crashing into an office building, and the janitor doesn't even turn around.
- This is a running gag in the Robot Chicken Star Wars specials.
- In that case, it's combined with Unusually Uninteresting Sight.
- In the Spongebob Squarepants episode, "Doing Time," there is a janitor listening to a headphones who is completely unfazed by the fact that a giant wave of cranberry juice just blasted through the hallway he was mopping.
- In the Bob's Burgers episode, "The Deepening," there is a janitor listening to a headphones who is completely unfazed by the fact that a giant shark just shattered the window he was vacuuming next to.