You may have heard the name Jonathan Leitersdorf in connection with his real estate dealings around town. The Israeli-born investor spent five years trying to sell off Sky Studios, the 11,000-square-foot triplex loft at 704 Broadway with a rooftop pool. The backdrop for several episodes of Sex and the City and the space where Chelsea Clinton had a big birthday party and Jerry Seinfeld married Jessica, the loft was only unloaded in late 2007, when Leitersdorf sold it to supermarket mogul Ron Burkle for $17.5 million. (He first listed the place in 2002 for $27 million.) Unfortunately, his investments at sea haven't been any luckier. His 178-foot yacht was just hijacked by pirates off the coast of Corsica!