The Grundy family seemed to be headed down the conventional path followed by American families: Daughter goes to college, graduates, gets a job and her own apartment. Then something happened. "She lost her job," Vel Grundy says about daughter Monika, 25. "She kept looking and got very, very discouraged. She moved back home." Grown children returning home. Brothers and sisters moving in together. Families taking in grandparents. Friends living in the basement.