DeskSpace dramatically enhances your desktop experience, allowing you to:

• Work and play on multiple desktops.
• Display multiple desktops in stunning 3D.
• Quickly switch between desktops using the mouse and keyboard.
• Drag windows between desktops by moving them to the sides of the screen.
• Display desktops in 3D on multiple monitors.
• Configure the hot keys and mouse buttons used to switch between desktops, and how DeskSpace displays and manages desktop.
• Use DeskSpace in multiple languages.

More info on their website:
http://www.otakusoftware.com/deskspace/