The yellow M&M dressed like Darth Vader was a turning point for dark chocolate.
In spring 2005, M&M's candies introduced a dark chocolate version of its iconic candy in time for the release of "Star Wars: Episode III, Revenge of the Sith." The promotion with the most anticipated movie of the year showed that dark chocolate had gone mainstream in a big way. And over the past year and a half, it's only gotten bigger.
"We have seen an explosion of items in the last t