Laurie J found this cool video (about 9 minutes) about Vivian Maier, street photographer and nanny.
As a photographer she was clearly exceptional. Top notch street photography.
[Update: Kent found a blog about Vivian.]
As a nanny, some likened her to Mary Poppins, delightful etc.
(But... as a sidebar, to me Mary Poppins in the movie never seemed like a delightful person. She seemed cold and domineering. Is it just me?)