Super Susan

This is where you have fixed shelves with a single Lazy Susan tray that spins independently on top of the shelf.  There are typically two of them in one corner cabinet.  This removes the pole/shaft that so many people hate.  The removal of the pole now allows you to store much larger items while maintaining the practical spinning motion.

Lazy Susan

The Lazy Susan is still a very popular option for clients of today.  
A Lazy Susan is a turntable (rotating tray) placed on a table or countertop to aid in distributing food. Lazy Susans may be made from a variety of materials but are usually glass, wood, or plastic