 Known for his trademark spontaneity of improvisation,  Robin Williams (I) (qv) was given free range by director  Chris Columbus (qv) to do what he needed. However, his  improvisation can occasionally spark off numerous references to  other works that prove to be legal headaches for movie studios. The  scene where Daniel speaks with his wife and refers to her clothes as  "this lovely Dances With Wolves motif", required legal clearance for  the studio to put it in the film. Associate producer  Paula DuPré Pesman (qv) later kept track of every reference  Williams made while improvising.