Papervision is different, it has potential and may indeed bring to fruition the vision of a 3D Web that went before it in the VRML days. The key to Papervision is its open source nature and its integration with Flash, a plugin that to be honest is no longer a plugin but an essential component of many websites
The movie below showcases Papervision to date:
The engine entered public beta in July 2007 with a number of tutorials and demos emerging online at an ever increasing pace.
The focus on Flash is to be welcomed, perhaps 2008 will be the year of the 3D Web?
See the Papervision Wiki for full details, tutorials and demos.