most influential modern art

This week Newsweek attempted to select the most influential piece of 20th art.

The contenders for the honor were Malevich's "Black Square," Pollock's "One (Number 31)," Duchamp's "Fountain, " Warhol's "Campbell's Soup Can," and Picasso's "Les Demoiselles D'Avignon."

I'd give it to Warhol, since his piece seems to be the most ubiquitous of all the choices, but I like Picasso, and I think "Les Demoiselles" is a great work.