Vector Blur is an interesting solution to go beyond the limitations of regular Motion Blur. It relies on the Composite Nodes Editor to perform. But even if the Nodes Editor could look intimidating at first glance, it's in fact very easy to set up. This short tutorial will go through the basics steps for enhancing your renders (both stills and animations) with good looking motion blur.
Thanks to Vector Blur, the red sphere stays in focus almost all time, but the background gets blurred because of the camera movement.
For Blender: 2.50 Alpha 2 and better