My favorite Windows Mobile device at the current time is my T-Mobile Dash that is super slim, has great battery life, includes WiFi and Bluetooth, and does just about everything I need it to do. Windows Mobile Smartphones have traditionally been able to view Office documents, especially attachments that are sent, using 3rd party applications like ClearVue and Pixel Viewer. Now with the popularity of QWERTY keyboard models with larger landscape displays (T-Mobile Dash, Samsung Blackjack, Motorola Q) and more power, people are looking for more functionality out of their devices and more ways to use these keyboards. DataViz just released a preview of a product that addresses that need in regards to native Office documents. Documents To Go for Windows Mobile 5 Smartphones can be downloaded in a trial mode for free right now. I just installed it on my Dash and look forward to trying it out and posting my thoughts here.