1. Mother and Daughter Reunion

In the fourth-season opener, Abby's plans for the new baby rattle Dharma, because Abby's admission that she and Larry made mistakes raising Dharma – like letting Timothy Leary babysit – threatens Dharma's memories of her childhood as idyllic. When Abby's pregnancy is threatened by complications, Dharma feels obscurely responsible, until a visit from the spirit of her dead friend George sets her straight. Meanwhile, Greg's advice helps Pete and Jane make a move to repair their crumbling marriage: they announce they are getting divorced.