It is safe to say that “Chicago” will be a brisk seller on DVD—thanks to its Academy Awards haul earlier this year and because the release has some nifty bonus features. The primary extra is a deleted musical sequence with Catherine Zeta-Jones and Queen Latifah performing “Class.” (This number was dropped from the film after poor test screenings.) Also included is a screen-specific audio commentary with director Rob Marshall and screenwriter Bill Condon, whom we wish had gone into greater technical depth. Marshall and Condon do, however, briefly discuss why certain songs were cut from the film, how the film was trimmed to get a PG-13 rating and the remarkable lack of computer-generated images. A standard-issue behind-the-scenes featurette is also included.—KC