Children of the '80s and '90s pretty much learned everything they need to know from TV. (It was basically like a third parent.) Besides "very special" sitcom episodes, one of the major ways we learned about how to say no to drugs and avoid "stranger danger" was from public service announcements.
For the last 10 years, the folks at Pavone marketing have conducted what they call the "Spot Bowl." The term 'spot' is radio and tv lingo for what most people call commercials or ads (advertisements).