WORLD'S LARGEST DANCING FOUNTAIN ...

The Dubai Fountain - World’s Largest Dancing Fountain
Set on the 30-acre Burj Khalifa Lake, at the center of the Downtown Dubai development in Dubai, the Dubai fountain can shoot 83,000 liters of water at any moment and water jets as high as 240 feet into the air. Illuminated by 6,600 lights and 25 colored projectors.

Here is a small video clip about the dancing fountain.