I wanted to make an announcement and pass on the word that Office Mobile 6.1 was just released to the web this past week and it is free. The new release supports the Office 2007 file formats so you can open up .docx, .xlsx & .pptx files on your device with Office Mobile and they support ZIP files too.
If you have Office Mobile already installed you can download the free upgrade from here: Microsoft Office Mobile Upgrade. If you don't have Office Mobile you can buy it here: Buy Office Mobile from Handango. Note that not all devices are supported so please check to make sure your device is compatible.
Nice job Office Mobile team! Not everyone knows this but Office Mobile is developed by the folks at the Microsoft India Development Center, so I hope everyone in Hyderabad is celebrating this release.