question:  what movies did Mary Steenburgen act in?
answer: Back to the Future Part III, The Proposal, Parenthood, Powder, Time After Time, Clifford, Nobel Son, Goin' South, Melvin and Howard, The Open Road, Dead of Winter, One Magic Christmas, Miss Firecracker, It Runs in the Family, Cross Creek, Pontiac Moon, Romantic Comedy, A Walk in the Woods
  