Another "iconic" Sighting

When even the notable Francine Prose -- novelist, short story writer, essayist, visiting professor at Bard and former president of the PEN American Center -- can fall into the "iconic" black hole, what hope is there. From tomorrow's NYT Travel section, the lead sentence: "For many people, especially those who don't live in and around Los Angeles, the idea of Sunset Boulevard conjures up the iconic Billy Wilder film of that name...." What does "iconic" add to that description? What does it even mean?