TutorialFind has taken on the job of cataloging all the tutorials on the web. Sometimes their definition of tutorial gets a little broad and they include what I'd consider articles. However, the stuff they do include is of very high quality. For example, the first item on the list of new tutorials today is an 80-page intro to PowerPoint with annotated pictures throughout. This is definitely the place to look BEFORE you create your own training materials.

TerraFly is a great new site that makes use of aerial photos and a huge database to allow you to do a virtual fly-over of anywhere in the US. It uses Java to allow you to search and manipulate the images. Beware... this is a pretty intensive app so your computer or your browser may get pushed, but it's worth the trip!