One expects flouncy Barry Diller, when he testifies in this week's court battle for control of IAC, will provide the colorful language which has kept journalists sweet for him for so many decades. But John Malone, the soulless corporate raider who is trying to seize the internet conglomerate from Diller, didn't do so badly himself today. The Coloradan billionaire told the Delaware court that the extravagant Diller, who decked out his office in IAC's Gehry-designed headquarters with fabulously expensive rugs, had made "a fine art" of his exploitation of the company jet.