Little Mikey
This might be before your time, but Little Mikey was a legendary advertiser of Life cereal. Long story short, Little Mikey doesn't want to try the cereal, but his brothers pressure him to do it, then he likes it. Pretty simple, right? Well, it was so simple and so effective that John Gilchrist (who played Little Mikey) was able to build a career out of it.
Moving on Up
As it turns out, having one of the most successful commercials of all time can put you in a pretty lucrative situation at a young age. Gilchrist has earned roughly $10 million from this commercial. That, and he became the face of a generation.