There are also dances in four-facing-four formation, which some (especially those influenced by the Lloyd Shaw Foundation) term mescolanza. One example would be The Devil's Backbone by William Watson. Luke mentioned Becket formation dances. There are also a handful of dances in double Becket formation. Start with two sets in Becket formation and then have them move closer to each other; dancers in all four lines (i.e., four couples) will be interacting with each other. As far as I know, Pat Shaw's dance K&E was the first one in this formation. David Millstone