U.S. Republican presidential candidate Newt Gingrich (L) and his wife Callista arrive on the red carpet for the annual White House Correspondents' Association Dinner at the Washington Hilton in Washington, April 28, 2012. [Photo/Agencies]

Al Roker (L) and his wife Deborah Roberts arrive on the red carpet for the annual White House Correspondents' Association Dinner at the Washington Hilton in Washington, April 28, 2012. [Photo/Agencies]