I’d be pushing it to call this buddy comedy/cop thriller a souffleit’s hardly that subtlebut movies don’t get much lighter than this. Harrison Ford and Josh Hartnett star as LAPD detectives investigating the murder of a rap group, a perfunctory adventure that allows writer-director Ron Shelton (Bull Durham, Tin Cup) and cowriter Robert Souza (a former LAPD detective himself) to dispense a lot of cheerful satire about such foolishness as police corruption (which is taken for granted throughout) and Angelenos’ obsessions with acting, real estate, and New Age calisthenics. This is basically about the heroes’ personalities (the producers seem to be hoping for a franchise like Beverly Hills Cop or Lethal Weapon), and though its ending feels protractedespecially the climactic chaseit kept me reasonably distracted. The backup cast includes Lena Olin, Keith David, Martin Landau, and Shelton regular (and wife) Lolita Davidovich. 111 min. (JR)