Performers depict a view of the English countryside during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Cameron Spencer/Getty Images)

Performers depict the industrial revolution during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

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A performer depicts the cleaning of a chimney in the era known as the Industrial Revolution during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Roger Sedres/Gallo Images/Getty Images)

The Olympic rings are assembled above the stadium in a scene depicting the Industrial Revolution during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Roger Sedres/Gallo Images/Getty Images)

Performers depict a view of the English countryside by playing a game of cricket during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Cameron Spencer/Getty Images)

Performers from the GOSH - Great Ormond Street Hospital perform during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

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A general view is seen as artists perform as Lord Voldemort during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Pascal Le Segretain/Getty Images)

Dancers perform a scene at a nightclub depicting music through the decades during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Lars Baron/Getty Images)

Performers dance as British music spanning the decades is played during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Laurence Griffiths/Getty Images)

British actor Rowan Atkinson in his role as Mr Bean takes part in the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Cameron Spencer/Getty Images)

Performers with a jetpack takes part in the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Cameron Spencer/Getty Images)

An artist performs on a bicycle during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Laurence Griffiths/Getty Images)

Performers dressed in the suits worn by The Beatles on the cover of their album 'Sgt. Pepper's Lonely Hearts Club Band' during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Laurence Griffiths/Getty Images)

Performers represent victims of the July 7 bombings during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Cameron Spencer/Getty Images)

Kobe Bryant and other members of the United States team enter the stadium during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Laurence Griffiths/Getty Images)

Athletes from the United States parade into the stadium during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Laurence Griffiths/Getty Images)

Performers dance during a scene in tribute of The Great Ormond Street Hospital for sick children and the NHS during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Michael Regan/Getty Images)

Sir Chris Hoy of the Great Britain Olympic cycling team carries his country's flag during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Pascal Le Segretain/Getty Images)

Searchlights over the Olympic Stadium during the opening ceremony of the 2012 London Olympic Games on July 27, 2012 in London, England. (Photo by Daniel Berehulak/Getty Images)

(Photo by Daniel Berehulak/Getty Images)

President Jacques Rogge speaks during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

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Seven young athletes representing the future of British sport run with the Olympic torch during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Cameron Spencer/Getty Images)

The Olympic flame burns in the cauldron during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Laurence Griffiths/Getty Images)

The flag of Great Britain is projected onto the House of Parliament and Big Ben during a light show to mark the start of the 2012 Olympic Games on July 27, 2012 in London, England.

(Photo by Harry How/Getty Images)

Sir Paul McCartney performs during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Lars Baron/Getty Images)

A general view while fireworks explode from the stadium roof during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England.

(Photo by Pascal Le Segretain/Getty Images)