racketboy.com • View topic - A Killer Trackball Gamepad by REvolve on KickStarter
Trackball Controller, Compatible With Ps3, Ps2, And Pc, With Programmable Key Combo Function, Trackball Controller - Buy Hong Kong SAR Wholesale Trackball Controller | Globalsources.com
Nvidia's touch-sensing trackball promises mouse-like accuracy in a controller | PC Gamer