Strange ads

Saw this post by Dootzkie and remembered MTS advert campaign.
MTS is one of "The Big Three" mobile communication companies in Russia, and in 2006 they undergone total redesign. Their old logo was simple, just letters:


Their new logo was ... egg.


The company explained that it was allegory for "everything genial looks simple" or smth, but people en mass thought that it's just stupid...
Several months later some MTS employee made public that the company achieved not great but steady increase in income. Why? Because for a month every conversation ended in several extra seconds:
-Have you seen new MTS logo?
-Yeah, stupid it is?
-Sure, it is stupid.

Genial things are simple. What interesting ad campaigns do you remember?