Sunday Dancing With The Stars was on ABC's Extreme Makeover Home Edition. Derek Hough tweeted several months ago that the show makes him tear up and that he wants to be on it too, helping. Derek led his pro dance team, Mark Ballas, Chelsie Hightower, Tony Tony Dovolani and Anna Trebunskaya, choreographing the hammering, sawing, rug ripping, and tearing down the old house. This Extreme Makeover show built a house equipped with a gym/dance area, for a family who's father started a program called...