Philadelphia's heady Headlong Dance Theater, a collaboration between David Brick, Andrew Simonet, and Amy Smith, is known for transforming the most antiseptic locale into enchanted terrain. In the New York premiere of Headlong's site-specific dance Hotel Pool, a business traveler takes an unexpected plunge into exotic waters (in this case, a pool on 225 Rector Street). Part of the Lower Manhattan Cultural Council’s Sitelines Festival, the piece brings suits and spirits together in one vibrant, glittering splash.