A public art project is letting average Joes appear on a giant billboard in New York's Times Square.

The initiative, titled I in the Sky, is the brainchild of artist Raul Vincent Enriquez, who uses a series of still photographs to create a 30-second flipbook-style animation of his subject.

The clips go on display on an electronic billboard on top of a skyscraper in Times Square, and will also be posted on a website.

Within 15 minutes of having their picture captured in the I in the Sky photobooth, visitors can see their larger-than-life faces displayed to the world.

Several participants have taken advantage of the opportunity to hold up written messages - both personal and political.

Some have held signs in support of Democratic White House hopefuls Barack Obama and Hillary Clinton.

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