Well it has happened. The first application I have seen that takes advantage of the new Microsoft Office 2010 Web Apps launched Wednesday. Docs.com lets you upload Office docs (PowerPoint, Word, Excel) either on your computer or using the MS Web Apps and then share them with your Facebook friends.
It was easy to start using. I opened Facebook and logged in. Then opened a new tab and went to docs.com and was automatically setup with the Facebook connector. It is a beta, so get on the waiting list.
And if you have not seen the MS Web Apps in action, just click on any of the available docs and it will open in the MS Web App. Here is one of the PowerPoint decks viewed in the MS Web App on Docs.com
– Troy @ TLC