Actors Signourney Weaver, Alan Rickman and director Marc Evans discuss the portrayal of autism in the IFC drama, Snow Cake.Actors Signourney Weaver, Alan Rickman and director Marc Evans discuss the portrayal of autism in the IFC drama, Snow Cake.Actors Signourney Weaver, Alan Rickman and director Marc Evans discuss the portrayal of autism in the IFC drama, Snow Cake.