Great article, Seth. Thanks for putting it together.

I may have two more formats to add - meta advertising and "oddvertising."

Meta, or "self-aware", advertising lampoons itself while winking to the audience (Joe Isuzu comes to mind). And, oddvertising, which tries to be weird for weird's sake (think Skittles' spots with the elephant beard and hybrid sheep) - taking Dru's disruption method to its hyperbole.

As you mentioned, ad formats are like water colors, and the shades of formats are constantly blended. But I thought these two more recent categories might be relevant, too.

Keep up the good work, Seth! My students enjoy reading your ad reviews.