Garry Winongrand
Garry Winogrand was a street photographer known for his portrayal of the United States in the mid-20th century. John Szarkowski called him the central photographer of his generation. Wikipedia.
Vivian Maier
Vivian Maier was a prolific street photographer. There was a really interesting documentary about her life, Finding Vivian Maier.
Eric Kim
Eric Kim is a street photographer who has a really solid blog with great tips.
Source: http://erickimphotography.com/
Clayton Hauck
Clayton Hauck does an amazing job of capturing the energy of his subject. He takes shots throughout my hometown of Chicago as well.
His site is at: http://claytonhauck.com/
Great use of light for my friend and DJ Major Taylor.