Because the killer in Halloween wore a William Shatner mask, Shatner wore one trick-or-treating with his grandkids. Once, when a man answered, "I leered at him with the mask, and then I yanked it off, and I stared at him. He screamed and shut the door."

When prankster DJs said a stealth fighter had landed at an Iowa airport, 10,000 people went to look. When callers complained, the DJs said the plane could only be seen "if you move your head back and fourth like a chicken and try to catch a glimpse out of the corner of your eye." Many people were trying this when the police arrived.

A Milwaukee alderman lost a fortune in stolen campaign signs reading: "Vote for Pat Stoner."

The cover of the Beastie Boys album Licensed to Ill features an airplane labeled 3MTA3. Held up to a mirror, it spells "Eat Me."

Children's television star Soupy Sales once told the children watching "Lunch with Soupy Sales" to go to their parents' wallets and mail him "those little green pieces of paper."

During a local run of The Ugly Duckling, Aubrey Plaza and the kids in the cast visited McDonald's in their chicken costumes. When Aubrey tried to order "20 Human McNuggets," an employee said their nuggets were chicken, prompting them to scream, squawk, and flee from the store.

On April 1, 1986, Carolyn Fox, a WHJY deejay in Providence, RI, announced that a "labor relations" committee had closed the city for the day. Fox gave listeners a number to call: the number of a rival station. WPRO-AM got hundreds of calls.

On April Fool's Day in 2000, pranksters painted a pedestrian crossing on England's M3 motorway.  

One April Fools' Day the Smithsonian's Air and Space Museum made room for "Wonder Woman's invisible plane" and produced a video of workers cleaning it.

Disney's rivalry with Warner Bros came to a head in Who Framed Roger Rabbit? which starred characters from both. After its release many viewers noticed what looks like Warner's Bugs Bunny flipping Disney's Mickey Mouse the finger.