What are the most "...wait a second, this commercial was for WHAT?!" inducing ads you can recall?

I suppose any medium qualifies - whether it be from television, internet, etc.

This question arose a few minutes ago after seeing a commercial of some young female entrepreneur who started up a great website that has helped countless numbers of people be cheaply relayed into the importance Best-Buy had in carrying the brand of laptop her parents bought her.

Way too sell your success story short... Letting Best Buy take the credit for selling a brand.