Use GE to spice up your lesson. (A trip to GoogleLitTrips will show you some of the possibilities.) You can point out the major landmarks featured in the novel. You can calculate distances mentioned by the characters. You can even place "markers" with additional information useful to your readers. Just log in and create your placemarkers and then download the kmz or kml file to share or post on your teacher page.
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If you are teaching Geography or History, why not use Google Earth to take your students on a virtual fieldtrip. (The Apple Learning Interchange has some great pointers.) Follow Hannibal or Gandhi's march or the Crusades or a WWII battle. Sometimes seeing makes all the difference.