Public service announcements are known for being boring, so back in 2012, Melbourne Metro Trains decided to liven things up a bit with their visual marketing campaign, and came up with the perfect way. How do you convey a message to avoid deaths caused by train accidents? You add cute cartoons, a catchy tune, and some dark humor, of course! And so they came up with some catchy lyrics about several dumb ways to die – getting your toast out with a fork, doing your own electrical work, keeping a rattlesnake as a pet, selling both your kidneys on the Internet, to name a few.
As expected, the campaign went viral. Within 24 hours, the song reached iTunes Top 10 Charts, and has 140 million views on YouTube as of this date!
Read more about this example from The Yellow Sparrow.