A couple competes during the qualifying rounds of the 2010 Tango World Championship Salon category in Buenos Aires, Argentina, Tuesday, Aug. 23, 2011. (AP Photo/Victor R. Caivano) (AP2011)
A couple dances tango during the inaugural night of the 2011 Tango World Championship in Buenos Aires, Argentina, Tuesday, Aug. 16, 2011. (AP Photo/Victor R. Caivano) (AP2011)
A couple competes during the qualifying rounds of the 2010 Tango World Championship Salon category in Buenos Aires, Argentina, Tuesday, Aug. 23, 2011. (AP Photo/Victor R. Caivano)
Dancers compete during the qualifying rounds of the 2010 Tango World Championship Salon category in Buenos Aires, Argentina, Tuesday, Aug. 23, 2011. (AP Photo/Victor R. Caivano) (AP2011)
A couple competes during the qualifying rounds of the 2010 Tango World Championship Salon category in Buenos Aires, Argentina, Tuesday, Aug. 23, 2011. (AP Photo/Victor R. Caivano)
Dancers compete during the qualifying rounds of the 2010 Tango World Championship Salon category in Buenos Aires, Argentina, Tuesday, Aug. 23, 2011. (AP Photo/Victor R. Caivano) (AP2011)
Dancers compete during the qualifying rounds of the 2010 Tango World Championship Salon category in Buenos Aires, Argentina, Tuesday, Aug. 23, 2011. (AP Photo/Victor R. Caivano) (AP2011)
A couple competes during the qualifying rounds of the 2010 Tango World Championship Salon category in Buenos Aires, Argentina, Tuesday, Aug. 23, 2011. (AP Photo/Victor R. Caivano) (AP2011)
Dancers compete during the qualifying rounds of the 2010 Tango World Championship Salon category in Buenos Aires, Argentina, Tuesday, Aug. 23, 2011. (AP Photo/Victor R. Caivano) (AP2011)
Couples dance during the inaugural night of the 2011 Tango World Championship in Buenos Aires, Argentina, Tuesday, Aug. 16, 2011. (AP Photo/Victor R. Caivano) (AP2011)
ALTERNATIVE CROP OF VC101 - Couples dance during the inaugural night of the 2011 Tango World Championship in Buenos Aires, Argentina, Tuesday, Aug. 16, 2011. (AP Photo/Victor R. Caivano) (AP2011)
Colombian dancers Diego Benavidez, right, and Natasha Agudelo, left, perform to win the finals of the 2011 Tango World Championship Salon category in Buenos Aires, Argentina, Monday, Aug. 29, 2011. (AP Photo/Victor R. Caivano)
Colombian dancers Diego Benavidez, right, and Natasha Agudelo, left, perform to win the finals of the 2011 Tango World Championship Salon category in Buenos Aires, Argentina, Monday, Aug. 29, 2011. (AP Photo/Victor R. Caivano) (AP2011)
Colombian dancers Diego Benavidez, right, and Natasha Agudelo, left, kiss at the end of a dance during the finals of the 2011 Tango World Championship Salon category in Buenos Aires, Argentina, Monday, Aug. 29, 2011. Benavidez and Agudelo won the competition. (AP Photo/Victor R. Caivano)
Colombian dancers Natasha Agudelo, left, and Diego Benavidez, right, celebrate after winning the finals of the 2011 Tango World Championship Salon category in Buenos Aires, Argentina, Monday, Aug. 29, 2011. (AP Photo/Victor R. Caivano)