Donaire's KO of Vargas was an inverted Dempsey roll. [ame]http://www.youtube.com/watch?v=tz2-oto699E[/ame] Beautiful
Its just side to side head movement alla peek a boo or old school bob and weave and coming back with big hooks. theres no secret to it. Tyson and Dempsey have plenty of examples in their fights
Cottos done it a few times. Its basically constant bobing and weaving to open up from underneeth hooks to either side