During the Olympics I will not be able to do any lessons in the class as we started our summer holiday but there will be friends around the world that they will have classes while the GAMES are happening.
You can find some ideas and printables from the following links
English for games
Create a new Olympic Game or a mascot
More Olympics worksheets and teaching ideas
At the beginning of 2011-2012 I created the a wiki project but never found time to deal with it because of the Comenius project and the trips so if you want you can also become a member to this wiki and start creating projects with your students.
Olympic Games, London 2012