Have you remembered Ferrari Windows 7 Desktop theme. As earlier another Windows 7 desktop theme is available to download at no charge.
Christian Kirchesch, International Site Manager, Windows International Online, has made the Windows 7 Porsche Theme available for download through Windows Live SkyDrive.
In addition, Kirchesch has also promised that more additional content and new Windows 7 themes will be published on the personalization webpage soon, which may include Ducati, Infiniti and the 20th Century Fox Film “Avatar” desktop themes on GA of Windows 7 i.e. 10/22/2009.