Mary Poppins is the greatest nanny of all time. She has magical powers, a never-ending bag, an umbrella handle that is a parrot that talks to her, she can speak to dogs, jump into drawings, has an Uncle that is as mad as a hatter, and she can fly! How is this not amazing?
She may be in league with Inspector Goole to spread goodwill and awesomeness throughout planet Earth, but this is only rumour.
We think that she is amazing, and she likes rum punch. Despite denying it, we also think that she might know a man with a wooden leg named Smith. (What's the name of his other leg?)