We're taking a trip down memory lane and revisiting some of the show's greatest moments as we say goodbye. Then, Donnie Wahlberg's catching us up on the latest with his family and his "Blue Bloods" family. Plus, Chef Richard Blais is taking it to the next level with his chicken and lobster piccata. And, Rachael's cooking up a crabby carbonara for supper. Later, Rachael gets a special message from Oprah!