Spaghetti trees:
The BBC television programme Panorama ran a famous hoax in 1957, showing the Swiss harvesting spaghetti from trees. They had claimed that the despised pest the spaghetti weevil had been eradicated. A large number of people contacted the BBC wanting to know how to cultivate their own spaghetti trees. It was in fact filmed in St Albans
Left Handed Whoppers:
In 1998, Burger King ran an ad in USA Today, saying that people could get a Whopper for left-handed people whose condiments were designed to drip out of the right side. Not only did customers order the new burgers, but some specifically requested the "old", right-handed burger.
The Great Iceberg
On April 1, 1978 a barge appeared in Sydney Harbor towing a giant iceberg. Sydneysiders were expecting it. Dick Smith, a local adventurer and millionaire businessman, had been loudly promoting his scheme to tow an iceberg from Antarctica for quite some time. Now he had apparently succeeded. He said that he was going to carve the berg into small ice cubes, which he would sell to the public for ten cents each. These well-traveled cubes, fresh from the pure waters of Antarctica, were promised to improve the flavor of any drink they cooled. Slowly the iceberg made its way into the harbor. Local radio stations provided excited blow-by-blow coverage of the scene. Only when the berg was well into the harbor was its secret revealed. It started to rain, and the firefighting foam and shaving cream that the berg was really made of washed away, uncovering the white plastic sheets beneath.
Taco Liberty Bell:
In 1996, Taco Bell took out a full-page advertisement in The New York Times announcing that they had purchased the Liberty Bell to "reduce the country's debt" and renamed it the "Taco Liberty Bell." When asked about the sale, White House press secretary Mike McCurry replied tongue-in-cheek that the Lincoln Memorial had also been sold and would henceforth be known as the Ford Lincoln Mercury Memorial.
Smell-o-vision:
In 1965, the BBC purported to conduct a trial of a new technology allowing the transmission of odor over the airwaves to all viewers. Many viewers reportedly contacted the BBC to report the trial's success.
This hoax was also conducted by the Seven Network in Australia in 2005.
In 2007, the BBC website repeated an online version of the hoax.
BBC Radio 2 (2004):
The Jeremy Vine Show reported that Germany had dropped the Euro but, as the German Mark was no longer in existence, they were in negotiations to adopt the British pound. Outraged listeners called by the hundreds to say that such a move would be an assault on British sovereignty.
Free concert:
Radio station 98.1 KISS in Chattanooga, Tennessee falsely announced in 2003 that rapper Eminem would be doing a free show in a discount store parking lot. Several police were needed to deal with traffic gridlock and enraged listeners who threatened to harm the DJs responsible. Both DJs were later jailed for creating a public nuisance.
Sydney Olympics):
Australian radio station Triple M breakfast show The Cage announced in 2002 that Athens had lost the 2004 Summer Olympics because they couldn't be ready in time and that Sydney would have to host it again.
Annual BMW Innovations:
A new "cutting-edge invention" by BMW advertised across British newspapers every year, examples including:
Warning against counterfeit BMWs: the blue and white parts of the logo were reversed
The "Toot and Calm Horn" (after Tutankhamun), which calms rather than aggravates other drivers, so reducing the risk of road rage,
MINI cars being used in upcoming space missions to Mars,
IDS ("Insect Deflector Screen") Technology - using elastic solutions to bounce insects off the windscreen as you drive,
SHEF ("Satellite Hypersensitive Electromagnetic Foodration") Technology, which sees the car's GPS systems synchronise with home appliances to perfectly cook a meal for the instant you return home,
A compact disc available to all BMW owners, which when played over the audio system performed minor service and diagnostic checks; when flipped over it played soothing classical music (Australia).