Trying to give something back to the Community...
So today's the day if you've been waiting for Office 2011 for Mac to ship. I've was lucky enough to get on the beta and I've been using it pretty much daily. I've not had any issues in sharing documents and files with users on the PC versions of Office although I did find a couple of bugs during the beta which were duly reported through Connect. There are also some "features" shall we say that differ from Office for PC (and having been a user of Word since 2.0 there have been a few teeth gnashing moments but nothing too major).
If you want more information check out the following post from the Office for Mac Blog:
http://blog.officeformac.com/?p=435
Read the complete post at http://wmug.co.uk/blogs/cliffs_blog/archive/2010/10/26/mac-microsoft-office-2011-in-the-stores-today.aspx