http://www.cnn.com/2005/US/03/24/art.pr ... index.html
I find it so funny and unsuprising that no one noticed for so long.NEW YORK (Reuters) -- Many a visitor to New York's Museum of Modern Art has probably thought, "I could do that."
A British graffiti artist who goes by the name "Banksy" went one step further, by smuggling in his own picture of a soup can and hanging it on a wall, where it stayed for more than three days earlier this month before anybody noticed.