Penny Marshall Director, Executive Producer Robert De Niro Leonard Lowe Actor Robin Williams Dr. Malcolm Sayer Actor Julie Kavner Eleanor Costello Actor Ruth Nelson Mrs. Lowe Actor John Heard Dr. Kaufman Actor Penelope Ann Miller Paula Actor Alice Drummond Lucy Actor Judith Malina Rose Actor Steven Zaillian Screenwriter Walter F. Parkes Producer Lawrence Lasker Producer Elliot Abbott Executive Producer Arne Schmidt Executive Producer Miroslav Ondrícek Cinematographer