Public Service Announcements have been attempted in every fashion to get their message through to the viewers. From using celebrities you idolize to remind you that they wouldn't be where they are now if they didn't stay in school to Nancy Reagan's simple "just say no".
Today's advertising agencies have picked up the military doctrine of rapid dominance, colloquially know as "shock and awe", to deliver the message. Deliver it in a brutally graphic and disturbing way.
Pop Crunch has an awesome collection of these new shock and awe advertisements. They are not for the weak of stomach or those who are planning to sit down to a meal. You must check out all the meth and workplace safety ads. If you don't feel a little disturbed after these, you have issues.