Google announced that they are holding two more Geo Teachers Institutes this summer. This time they will held in England and Ireland in June. These two day institutes will focus on using Google Earth, Google Maps, and Google SketchUp in classrooms. Participation in the institutes is by invitation only and you do have to apply by April 30. You can get all of the details and the application here.
If you have never used Google Maps for anything more than getting directions, you may want to see my introduction to Google Maps for Educators.