PARENTHOOD plays variations on the notion that in the game of parenthood you cannot win. Steve Martin plays the world’s most attentive father whose child still ends up in therapy. Jason Robards plays the world’s most neglectful father whose kid comes back late in life needing him, then betraying him. Dianne Wiest portrays a mother who tries to make all the safe life decisions for her child, but the child knows better than she does. All parents can do is love their children, support them, pick them up when they fall. But there’s no such thing as winning this game.