Crystal McCahill is set to make an appearance in Playboy magazine as Miss May 2009. But first, the Chicago area woman must appear before a Cook County judge in connection with a Jan. 7 DUI arrest. The 5-foot-7 brunette, who has also appeared on the E! Playboy reality show "The Girls Next Door," had a blood-alcohol level of more than twice the legal limit when she drove a 2005 Volkswagen Passat through a red light at West Chicago Avenue and North Wood Street, according to a Chicago Police report. McCahill, 25, told police, "I had three shots at Climax [nightclub],...