Logitech NuLOOQ
http://www.logitech.com/index.cfm/products/nulooq/home/US/EN,crid=2600,categoryid=499
or
3Dconnexion Spacetraveler
http://www.3dconnexion.com/products/3a1.php
http://www.logitech.com/index.cfm/products/nulooq/home/US/EN,crid=2600,categoryid=499
or
3Dconnexion Spacetraveler
http://www.3dconnexion.com/products/3a1.php