As reported by Frank Taylor on Google Earth Blog, Google has authored an iGoogle gadget whereby you can view interesting places right on your customized iGoogle page. Browing other gadgets, I came across additional interesting items that may be worthy of your home page:
Earthquake Watch - Earthquakes in the last 24 hours as reported by the USGS.
Google Earth Hacks - The latest files for Google Earth that have been added to Google Earth Hacks.
Google Earth Community - Content from the Google Earth Community.
Google Map Search - Find places with Google Maps without leaving your homepage.