Who's- Michelle Eyebrow video.
Purpose- To buy Chocolate.
Target Audience-People who love dairy milk chocolate.
Why effective- The kids want chocolate and they love dairy milk chocolate.

Who's-Maria's Hall of Fame Video.
Purpose-People need milk even for peanut butter and other things.
Target Audience- People who don't drink milk.
Why effective- The guy has no milk to wash down the peanut butter when somebody calls.

Who's Maya Anti smoking commercial
Purpose- To stop people from smoking.
Target Audience- Smokers
Why Effective- Too many people smoke and they are trying to stop people from smoking.