3Dconnexion
3D product designer, 3D animators, 3D modellers, creative professionals, and Google Earth users can fly through rich 3D worlds or seamlessly control 3D models using an award-winning 3D mouse from 3Dconnexion, a Logitech company: SpacePilot PRO, SpacePilot, SpaceNavigator, SpaceExplorer and SpaceTraveler.
http://3dconnexion.com/