Challenger Deep Submersible is shown for the first time at the Virgin Group Media Announcement by the President & CEO of Virgin Airlines Sir Richard Branson at the Newport Harbor Yacht Club on April 5, 2011 in Balboa, California. (Photo by John M. Heller/Getty Images)

The HMAS Adelaide is scuttled off the coast of Avoca Beach on April 13, 2011 in Gosford, Australia. After the scuttling was succesfully protested in 2010, today the HMAS Adelaide was finally scuttled off the NSW Central Coast to create an artifical reef, the first of its kind in this state. (Photo by Brendon Thorne/Getty Images)

Jim Belushi attends the Creative Coalition & friends celebration of the Broadway show 'Born Yesterday' at the Nat Sherman Flagship Store on April 14, 2011 in New York City.

Anne Hathaway arrives for the premiere of Twentieth Century Fox & Blue Sky Studios' “RIO” on April 10, 2011 in Hollywood, California. (Photo by John Sciulli/Getty Images)

A young and sleepy penitent of the Cofradia de Jesus del Via crucis is carried by another as they walk the streets during a Holy Week procession on April 19, 2011 in Zamora, Spain. Easter week is traditionally celebrated with processions in most Spanish towns. (Photo by Jasper Juinen/Getty Images)

Bunting hangs on Regent Street on April 19, 2011 in London, England. Preparations are underway across the city as the Royal wedding of HRH Prince William and Kate Middleton draws nearer. (Photo by Dan Kitwood/Getty Images)

Lance Sergent Martin Mitchell (R) pins medals to Coldstream Guardsman Martin Hughes in the Tailor Shop in Wellington Barracks on April 20, 2011 in London, England. Soldiers involved in the Royal Wedding of Prince William and Catherine Middleton are preparing their ceremonial duties ahead of the day. (Photo by Oli Scarff/Getty Images)

A Fiat 500c is unveiled at the New York International Auto Show April 21, 2011 in New York City. The New York Auto Show is one of the largest auto shows in the country. (Photo by Ramin Talaie/Getty Images)