The GlobeFish is a new device showed at IEEE VR 2009 by the team of Prof. Dr. Bernd Fröhlich. In a nutshell it’s an improved spacemouse which is easier to use when using rotations.
From their webpage :
The Globefish consists of a custom three degrees of freedom trackball which is elastically suspended within a surrounding frame. The trackball, suitable for being precisely hold from two opposing sides, can be slightly moved in all spatial directions to induce translational input. Rotational input is generated by simply rotating the sphere.
Here is it in action, presented by Alexander Kulik and André Kunert :
So you heard the message, if you want to sell this great device contact Alexander Kulik !