Even after the fat lady sings, Microsoft will be explaining the OOXML pass at ISO. Particularly to the EU.
Glyn Moody has a short & readable narrative of the irregularities that explain Microsoft's amazing "success".
"Achieving Openness: a closer look at ODF & OOXML" | (Jun 2007)
"Interoperability: will the real universal file format please stand up?" | Novatica UPGRADE (Dec 2006)
"What is OpenDocument?" | O'Reilly ONLamp (Jul 2006)
"ODF & Innovation Theory" | PlexNex (Oct 2006)
Articles are archived at Hiser Verlag.