Remember this place? It's the 76th-floor Time Warner Center penthouse telecom mogul Michael Hirtenstein bought for $15.7 million, decided he didn't want to live in, and then rented to Jay-Z for $40,000/month. Then Big Hirt sold the place to Mark Cuban's business partner for $5,596 per square foot, or a round $27 million, in early 2007. Quite the history! And now the 4BR pad is back on the market, this time at a whopping $7,880/sq ft, or $38 million. We assume the seller's conviction that the property has more than doubled in value in six years has something do with the giant pony mural. Irresistible, right?