May 17, 2012 9:46 am On This Week's Open House: Tour a 90210 Penthouse and Orphanage turned Luxury Home Get a sneak peek of this weekend’s episode and catch an all-new Open House Sunday on NBC. Check your local listings. US & World Videos 2:35 World-renowned ballerina Michaela DePrince dies at age 29 1:39 Groundbreaking ballet dancer Michaela DePrince dead at 29 2:36 5 myths about Hispanic household wealth debunked 1:47 ‘Trying at times': Stranded astronauts discuss sending Boeing Starliner home without them 0:38 WATCH: Train collides with 18-wheeler carrying a tank