U.S. President Barack Obama waits with first lady Michelle Obama and her mother Marian Robinson to greet trick or treaters at the White House October 29, 2011 in Washington, DC. President Barack Obama and first lady Michelle Obama hosted military families and other trick or treaters for a Halloween party. (Photo by Brendan Smialowski/Getty Images)

“Modern Family” actor Rico Rodriguez and his sister Raini Rodriguez from the upcoming Disney Channel series, “Austin & Ally”, ride The Mad Tea party on October 29, 2011 at Disneyland in Anaheim, California, (Photo by Paul Hiffmeyer/Disney Parks via Getty Images)

A model looks at her ipad before Tsai Meiyue Wedding Dress S/S 2012 of China Fashion Week Spring/Summer 2012 on October 30, 2011 in Beijing, China. (Photo by Feng Li/Getty Images)

Models looks at an iphone backstage before Tsai Meiyue Wedding Dress S/S 2012 of China Fashion Week Spring/Summer 2012 at the Banquet Hall, Beijing Hotel on October 30, 2011 in Beijing, China. (Photo by Lintao Zhang/Getty Images)

Police officers patrol a bridge ahead of the G20 Summit on November 2, 2011 in Cannes, France. (Photo by David Ramos/Getty Images)

Protesters affiliated with Occupy Wall Street meditate during a “flash meditation mob” in Zuccotti Park on November 2, 2011 in New York City. Earlier in the day veterans groups featuring current and former members of the United States military marched in support of Occupy Wall Street and to pay homage to Scott Olsen, a former Marine and Iraq War vet who sustained a skull fracture after he was injured by police at an Occupy Oakland protest. (Photo by Mario Tama/Getty Images)

Who Left The Tap Running by artist Simon McGrath is seen as part of the Sculpture by the Sea outdoor exhibition along the Bondi to Bronte coastal walk on November 4, 2011 in Sydney, Australia. (Photo by Lisa Maree Williams/Getty Images)