Discussion- Shock Advertising

We live in a time where shock sells product. Shocking images catch the attention of consumers. Artists like Madonna base their image and music around generating controversy and discussion. Calvin Klein and his provocative underwear billboard of Mark Wahlberg in New York's Times Square drew massive media attention. More recently, the Cartoon Networks digital signs promoting a new show, nearly shut down Boston as they created a security scare.

Have you ever been shocked by an image in the media? What was the experience like and how did it shape your perspective of the product advertised? Can advertisers go too far in the realm of "shock advertising"?