One of the funny things in Sweden is that I had a student who only learned two days in advance that there was an OOX workshop being held in Sweden. He was enormously lucky since the workshop was being held two blocks from where he lives! :)
So, if you live near London / Reading England, or you don't and wouldn't mind driving (or flying since Heathrow is not far away):
http://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032334916&Culture=en-GB
Office Open XML England is near. April 30th.
See you there (and this time, I will bring my working SharePoint demo....)
I already look forward to the fun security checks on Heathrow....