New York's Museum of Modern Art is showing a retrospective of Willem de Kooning (1904 -1997) between September 11th 2011 and January 9th 2012. Containing nearly 200 works it shows de Kooning's development over seven decades.
Part of a group of artists that came to be known as the New York School in the post-World War II era, de Kooning painted in a style that came to be referred to as Abstract expressionism or Action painting. A painterly movement that did not reach me in Essex until the sixties. His subsequent influence on my way of painting abstracts is all too obvious.
but a search of the internet will turn up much more.