Dent and Batman is the distance they are willing to go for their causes, and that after Dent's corruption he remains a crime fighter but he takes this to an extreme because he dislikes the restrictions of the law. Eckhart's performance was influenced by the Kennedy family, particularly Robert F. Kennedy, who fought organized crime with a similarly idealistic view of the law. During discussions on the portrayal of Dent's transformation into Two-Face, Eckhart and Christopher agreed to ignore Tommy Lee Jones's "colorful" portrayal in Batman Forever (1995), in which the character has pink hair and wears a split designer suit, in favor of a more realistic, slightly burnt, neutral-toned suit. Describing his role as GCPD sergeant James Gordon, Oldman said Gordon is the "moral center" of The Dark Knight, an honest and incorruptible character struggling with the limits of his morality. Maggie Gyllenhaal replaced Katie Holmes as Rachel Dawes, as Holmes chose to star in the crime comedy Mad Money (2008) instead. Gyllenhaal approached Rachel as a new character and did not reference Holmes's previous performance. Christopher described Rachel as the emotional connection between Wayne and Dent, ultimately serving as a further personal loss to fuel Wayne's character. Gyllenhaal collaborated with Christopher on the character's depiction because she wanted Rachel to be important and meaningful in her relatively minor role. Musician Dwight Yoakam turned down a role as the bank manager or a corrupt police officer because he was recording his album Dwight Sings Buck (2007). Pre-production In October 2006, location scouting for Gotham City took place in the UK in Liverpool, Glasgow, London, and parts of Yorkshire, and in several cities in the U.S. Christopher chose Chicago because he liked the area and believed it offered interesting architectural features without being as recognizable as locations in better-known cities such as New York City. Chicagoan authorities had been supportive during filming of Batman Begins, allowing the production to shut stretches of roads, freeways, and bridges. Christopher wanted to exchange the more natural, scenic settings of Batman Begins such as the Himalayas and caverns for a modern, structured environment the Joker could disassemble. Production designer Nathan Crowley said the clean, neat lines of Chicagoan architecture enhanced the urban-crime drama they wanted to make, and that Batman had helped improve the city. The destruction of Wayne Manor in Batman Begins provided an opportunity to move Wayne to a modern, sparse penthouse,