Edge Ring Connect>>Download

 

This script with editable poly objects only. Select a single edge then run this script. It will perform a ring and then connect (value of 1). It also copies the selection of verts that make up the new loop to vertex sub-object mode. So if you then switch to vertex mode those verts will be the current selection.

 

If you have questions or requests feel free to send me an email... seraph@ca.rr.com