A friend recently forwarded this link to me which gives you an inside look at a sushi restaurant. Many popular "kaiten sushi" shops have a circular conveyor belt where plates are placed that revolve around in front of the seated customers. Customers choose the plates with sushi items that look appealing to them.
This short video was taken by a foreign customer who placed a running video camera on the conveyor belt. The clip makes for an interesting few minutes of people watching, and an inside peek at the kitchen at the heart of the sushi shop. Enjoy!