Robert Irwin has no doubt his late father, Steve Irwin, would be a major fan of Dancing With the Stars. "After doing this experience, I reckon I think he'd be stoked," Robert, 21, exclusively shared with Us Weekly after the Tuesday, September 16, premiere. "I reckon he would love it in here. This is like the ultimate adrenaline rush, and that's what he loved more than anything else." Steve died in September 2006 at the age of 44 after being injured by a stingray while filming a wildlife documentary in the Great Barrier Reef.