Robert Irwin brought everyone in the ballroom to tears this week on Dancing With The Stars, including himself! During "Dedication Night" on Tuesday, the wildlife conservationist and his pro partner, Witney Carson, performed a contemporary routine set to Phil Collins' You'll Be In My Heart from the Disney film, Tarzan. He dedicated the dance to his mom, Terri Irwin, for her strength following the death of his dad, Steve Irwin, in 2006. He died at only 44 years old when a stingray barb struck him.