I try not to break news on this blog. I leave that to Frank Taylor, Stefan Geens, and other bloggers. But you may not have noticed that in Version 4.2, there is a new button entitled Add Content at the top of the Places panel.
Click this to add exciting KML-based content from the Google Earth Gallery. This content is created by users like yourself and varies from fun to breathtaking to downright silly. Be sure to check it out.
Learn more about adding content to Google Earth.