In my presentation To Geography & Beyond With Google Maps & Earth I always share some tips on how to locate Google Earth tours. One of those tips is to refine your Google search by file type and select .KMZ. In the video embedded below I provide a demonstration of how to quickly find, open, and save Google Earth files.
Applications for Education
One of my favorite uses of Google Earth outside of the typical social studies lesson is to use Google Earth in literature lessons. Google Lit Trips provides many great examples of using Google Earth to help students understand the importance of place in a story.