As far as I know, this is the first time that an iPhone OS has provided the capability of opening documents outside of it’s default applications. GoodReader’s latest update, 2.7.4, has just set the bar for other applications within the iPad document reading space. Users now have the ability to be in an application like Mail and open attachments inside of GoodReader. This can be accomplished either by tapping the attachment, or pressing it down for a about 2 seconds and selecting your desired application. As of right now GoodReader is the only app of its kind. Definitely worth the your George Washington.