Mark Ballas & Val Chmerkovskiy - “Toxic” Duel br "Dancing with the Stars: Greatest Results Show Performances" May 10, 2011 br Dancing With The Stars Season 11 Week 3 Results Show October 5, 2010 br String duel performance of Britney Spears’s hit, “Toxic,” accompanied by pro dancers Tanisha Belnap and Lacey Schwimmer.