R.I.P
Re: what made him great:knowing what needed to be done to remove as many barriers between the user and the usability of the hardware eg CLI---->GUI, iPod click wheel, UNIX--->OSX, custom GUI and OS for touch screens when everyone else was using desktop OS's with tacked-on touch screen functionality. Of course award-winning industrial design and marketing that made Apple products "cool" to own, but none of that would have mattered if the devices didn't work as well as they do, look at Mac Cube, coolest looking mac ever, but ho-hum performer.
It takes talent, vision and insight in know what "works" and what doesn't, and Jobs had that in spades.