This will have sites and videos of people who are already making are difference.
Even dogs can help people:
Surf Dog Ricochet: Surfice Dog
My Hero Project:
Here you can find out about people making a difference, and even watch short films about being a hero to others.
This dog saved kittens from a fire.
This is pingu the pigion frank,remy,jaime and some others saved him. The're sending him to bird rescue.