There's nothing more enjoyable than seeing famous people thank the people who helped make them who they are today. It shows not only a slice of humility, but also that celebrities aren't created overnight. Most successful people are shaped — usually with the help of teachers.
If there's one thing famous people have in common is that they all were inspired by a teacher who helped them get on the right path. Whether it's a drama teacher showing a young actor the ropes or an English teacher dropping knowledge about the world.