Nothing but love for the lightly-updated iWork, but millions of Macs in SOHO, business and enterprise settings depend on Microsoft's Office 2011 suite for productivity mojo every day. The Office for Mac team noted on its official blog that Office 2011 is Mountain Lion-ready and fully supported, as is (somewhat surprisingly) Office 2008.
The O4M team offers up two quick tips for making sure Office 2011 is current. First, check that the AutoUpdate feature is enabled & run any available updates; you can find AutoUpdate