18. The storage device as recited in claim 17 , wherein the first and second locations each include coordinate locations on the multi-touch input display surface that are abstracted from areas of the first and second contact on the multi-touch input display surface, respectively, and wherein the first and second contact each occur between a human hand and the multi-touch input display surface.
17. A storage device for operation with a computing system having one or more processors and a multi-touch input display surface, the storage device comprising: stored computer-executable instructions which are executable by the one or more processors for causing the computing system to perform a method for selecting items displayed on the multi-touch input display surface, the method comprising: an act of detecting a first contact with the multi-touch input display surface at a detected first location on the multi-touch input display surface; and an act of detecting a second contact with the multi-touch input display surface at a detected second location on the multi-touch input display surface; an act of calculating a selection region on the multi-touch input display surface based at least on the detected first location and the detected second location, wherein calculating the selection region on the multi-touch input display surface comprises calculating the selection region based on a context at the computer system; an act of selecting one or more items displayed on the multi-touch input display surface in response to the one or more items being at least partially included within at least a portion of the calculated selection region; and an act of rendering item visual feedback at the multi-touch input surface to visually indicate the one or more items having been selected by at least altering display characteristics of the one or more selected items.