 Brenda, come back. We need to talk. No, I am finished talking. Now I'm going upstairs and I'm going to pack and then I'm leaving this house. And I don't want either one of you to try and stop me. Shannon Doherty spent her last years advocating for cancer and awareness while continuing to act. And she is one of three pop culture stars that we've lost in the last few days, along with Ruth Westheimer and Richard Simmons.