1. A touch screen interface for an electronic system, the touch screen interface comprising: a display screen; a touch sensor proximate to the display screen, the touch sensor adapted to sense object motion in a sensing region, wherein the sensing region overlaps at least part of the display screen; and a processor, the processor coupled to the display screen and the touch sensor, wherein the processor is adapted to cause a scroll wheel indicating a substantially circular scrolling path to appear on the display screen in response to the touch sensor sensing object motion corresponding to a scrolling initiation gesture, and wherein the processor is further adapted to cause scrolling in response to the touch sensor sensing, after sensing the object motion corresponding to the scrolling initiation gesture, subsequent object motion along the substantially circular scrolling path; wherein the subsequent object motion comprises a sliding object motion substantially following at least a portion of the substantially circular scrolling path.