I know you have been inundated with screenshots of Documents To Go here on BerryReview but now you get video. DataViz will be launching Documents To Go Premium Edition in June 2008 so we will be seeing it really soon. You can sign up to be on their mailing list at this link.
They just released the presentation they made at WES this year on their Blog. You can check it out on YouTube below if you want to get a better idea of what it will bring to the table.