St. Patrick's Day 2010

People enjoy the St. Patrick's Day parade in Dublin, Ireland. Wednesday March 17, 2010. Hundreds of thousands of people will mark the national day at more than 180 events in towns and villages across the country.

St. Patrick's Day in Dublin

Performers enjoy the St. Patrick's Day parade in Dublin, Ireland Wednesday March 17, 2010. Hundreds of thousands of people will mark the national day at more than 180 events in towns and villages across the country.

St. Patrick's Day in Dublin

Children watch the St. Patrick's Day parade in Dublin, Ireland Wednesday March 17, 2010. Hundreds of thousands of people will mark the national day at more than 180 events in towns and villages across the country.

St. Patrick's Day in Dublin

People enjoy the St. Patrick's Day parade in Dublin, Ireland Wednesday March 17, 2010. Hundreds of thousands of people will mark the national day at more than 180 events in towns and villages across the country.

St. Patrick's Day in New York

New York police commissioner Ray Kelly, center, arrives to lead the St. Patrick's Day Parade as its Grand Marshall in New York, Wednesday March 17, 2010.

St. Patrick's Day in New York

Cardinal Edward Egan, right, and Archbishop Timothy Dolan laugh outside St. Patrick's Cathedral during the 249th St. Patrick's Day parade, Wednesday, March 17, 2010, in New York.

St. Patrick's Day in New York

Cardinal Edward Egan, left, and Archbishop Timothy Dolan greet NYPD Commissioner Ray Kelly, center, outside St. Patrick's Cathedral during the 249th St. Patrick's Day parade, Wednesday, March 17, 2010, in New York.

St. Patrick's Day in New York

Spectators cheer as the participants march up Fifth Avenue during the St. Patrick's Day parade, Wednesday, March 17, 2010, in New York.

St. Patrick's Day in New York

Karim Simmons, right, from the Bronx, watches the participants march up 5th Ave during the St. Patrick's Day parade, Wednesday, March 17, 2010, in New York.

St. Patrick's Day in New York

Firefighters carrying 343 American flags representing the firefighters killed on Sept. 11 march up 5th Ave during the 249th St. Patrick's day parade, Wednesday, March 17, 2010, in New York.

St. Patrick's Day in New York

Members of the 42nd and 198th Infantry Division band lead the U.S. Army 69th Division march in the St. Patrick's Day Parade in New York, Wednesday, March 17, 2010.

St. Patrick's Day in New York

Children with the Parents and Students Irish Dancing and Music Association of Woodside, Queens, perform a traditional Irish dance as they march up Fifth Ave during the 249th St. Patrick's Day parade, Wednesday, March 17, 2010, in New York.

St. Patrick's Day in New York

Members of the Nassau County, NY Firefighters Pipes and Drums march past the Cathedral of St. John the Baptist in the 183rd Savannah St. Patrick's Day parade, Wednesday, March 17, 2010 in Savannah, Ga. The St. Patrick's Day celebration is the city's largest annual celebration and one of the largest St. Patrick's Day events in the nation.

St. Patrick's Day in Belfast

People watch the St Patrick's Day parade in Belfast, Northern Ireland, Wednesday, March 17, 2010. Hundreds of thousands of people will mark the national day at more than 180 events in towns and villages across Ireland and Northern Ireland.

St. Patrick's Day in Belfast

People watch the St Patrick's Day parade in Belfast, Northern Ireland, Wednesday, March 17, 2010. Hundreds of thousands of people will mark the national day at more than 180 events in towns and villages across the country.

St. Patrick's Day in Belfast

A man entertains the crowd during a St Patrick's Day parade in Belfast, Northern Ireland, Wednesday, March 17, 2010. Hundreds of thousands of people will mark the national day at more than 180 events in towns and villages across the country.

St. Patrick's Day in Washington

Green water can be seen in the fountain on the North Lawn of the White House in Washington, on St. Patrick's Day, Wednesday, March 17, 2010.

St. Patrick's Day in Washington

President Barack Obama walks with Ireland's Prime Minister Brian Cowen and House Speaker Nancy Pelosi of Calif., after a Friends of Ireland luncheon for St. Patrick's Day, on Capitol Hill in Washington, Wednesday, March 17, 2010.

St. Patrick's Day in Indianapolis

William Eckrich waits for candy and beads during the annual St. Patrick's Day parade in Indianapolis, Wednesday, March 17, 2010.

St. Patrick's Day in Indianapolis

A man entertains the crowd during the annual St. Patrick's Day parade in Indianapolis, Wednesday, March 17, 2010.

St. Patrick's Day in Chicago

A kid watches during celebrations at the annual St. Patrick's Day parade in Chicago, Saturday, March 13, 2010.

St. Patrick's Day in Chicago

Thousands of people watch as the Chicago River is dyed green in Chicago, Saturday, March 13, 2010 as part of Chicago's celebration of St. Patrick's Day.

St. Patrick's Day in Chicago

Delaney Mickiewicz smiles as she watches during celebrations at the annual St. Patrick's Day parade in Chicago, Saturday, March 13, 2010.

St. Patrick's Day in Montreal

AP Photo/The Canadian Press, Graham Hughes

Spectators enjoys festivities at the 186th consecutive St. Patrick's Day parade in Montreal, Sunday, March 14, 2010.

St. Patrick's Day in Montreal

A spectator enjoys festivities at the 186th consecutive St. Patrick's Day parade in Montreal, Sunday, March 14, 2010.