 Gollum is different in this movie, because scheduling forced those  scenes to be filmed based on an early design. He is only seen in  brief glimpses, partly due to this discrepancy, and partly to tease  audiences before his entrance in  _Lord of the Rings: The Two Towers, The (2002)_ (qv).  Peter Jackson (I) (qv) (jokingly) said in the commentary on the  Extended DVD that sometime in the future he would enjoy creating a  Special Edition (a la Star Wars) where this inconsistency could be  fixed.