Cadbury's

This advert is again very simple. As an idea it is completely out there. I cant imagine what was said when they proposed this as an idea, but it seems to have worked out well as nearly everyone remembers it.

The comedy pair Julian Barratt and Noel Fielding a.k.a. The Mighty Boosh created a sketch using the same idea, which goes some way to showing how big the advert became.