In response to Stephen Colbert endorsing Mayonnaise on his show and criticizing their Totally Radical commercials, Miracle Whip issued a press release promising to air new attacks during commercials of The Colbert Report.And they actually went through with it.
Of course to do so they had to purchase ad time on his show. During a recession. Which he used to buy more delicious mayonnaise.
Nestle had some ads for their Crunch chocolate bar where a Jerk Ass host would trick people into eating one, only for them to be maimed/killed by a giant boxing glove. (And the host makes an inappropriate racist comment to a sumo wrestler) The last ad, however... the host decides to trick a sweet little old lady into eating a Crunch bar. The old lady takes a bite, and then drops her purse. She bends over to pick it up, and the host gets flattened by the boxing glove. Undeterred, the old lady delivers the commercial tagline, and begins singing a ragtime song.
Every single Sony Bravia Commercial ever done. This Troper's personal favourite is the one with the Play-Doh Bunnies.
My personal favorite is as follows: Toryglen, a public housing tower block in Glasgow where Jim Kerr and Charlie Burchill of Simple Minds grew up, was about to be demolished. But before it was, a Sony Bravia commercial/advert was filmed. A very special Sony Bravia commercial/advert.
The Walkman Project also counts. They got together a metric tonne of musicians of various disciplines and got them all to play a single note each in a chain of awesome.
Their bouncy ball ad is enough to warrant a mention here, because not only is it just EPIC, but every single one of those balls are real, NO CGI, they're real!