The Organizer in Autodesk Showcase. I think it's one of the most useful, and underused tools in the product.
The Organize in Showcase reminds me a little of the feature browser in Autodesk Inventor. It provides a tree that shows the structure of the components in a scene, and allows for functions like moving and grouping together of the different objects so they're easier to work with.
Accessing the Organizer in Showcase is easy. It's under the Edit pulldown menu, or just hit the 'O' key!
|A Showcase scene with the Organizer shown|