The rest of the Microsoft Office in-the-cloud services for the iPad
Two services let you run Office 2010 as a hosted app over the Internet from a Windows Server, with the claimed benefit of giving you the actual Microsoft experience on your iPad.
The subscription-based Microsoft Office 365's hosted Office Web Apps works surprisingly well in the iPad's Safari browser but has little integration with the iPad, so accessing local files or printing requires labor-intensive workarounds. (Log in from office.microsoft.com.)
The free OnLive Desktop is a horrible Office hosting service. Ignore it.
Amazon Web Services offers its WorkSpaces Windows-in-a-cloud service for $35/month, which has an iPad app. However, it's clearly meant as a PC replacement, not an iPad adjunct, so we did not test it.