I made a carnival ride Ghost Train which uses a technic 9volt motor to turn the entire MOC.
The train itself is fixed to the base so you can see all the rooms of the ride as it rotates.
Here's some more pictues. Image 1 Image 2 Image 3
I also made a Brickfilm so you can see it in action.
YouTube (Watch in HD)
Edited by TheBrickster, 25 October 2009 - 05:20 PM.