Dreamgirls

The film, and the original Broadway musical, are based heavily on The Supremes (later known as "Diana Ross & The Supremes"). Curtis Taylor, Jr. represents Motown Founder Berry Gordy. Both men worked in the automotive industry before focusing on music, and integrated aspects of the automotive business into the music making process. Both were romantically involved with the lead singer of their label's most successful female group. Effie's departure from the group closely matches Florence Ballard, whose voice was much more powerful than Ross's.

When Deena and the girls perform the disco version of 'One Night Only', the stage backdrop is made up of computerized moving head lights, which didn't exist at the time.

The film begins immediately after the distribution studio logos, with no opening titles/credits of any kind.

In 2017, Paramount released a "Director's Extended Edition" of "Dreamgirls." This version runs ten minutes longer than the theatrical version and contains changes which include the following:

• The opening talent show scene has extended performances of "I'm Looking' for Something'" and "Goin' Downtown," including a longer scene on the stairs outside the Detroit Theater, where Curtis offers Marty a cigarette and a sales pitch after Charlene and Joanne walk out on him, and Curtis catches a first glimpse of Deena
• Sung dialogue leading up to "Steppin' to the Bad Side" ("You've got me to think for you now...") proceeds the scene in which Curtis tells Wayne and CC of his plan to sell off the car dealership, similar to the lead-up to the song in the original Broadway show. This scene takes the place of the shorter, spoken word alternate version used in the theatrical version
• All shots of Wayne enacting Curtis' payload plans at radio stations are replaced with scenes of the Mafia members Curtis makes a deal with distributing the records and the money
• The Jimmy & the Dreamettes performance section go "Steppin to the Bad Side" is extended
• "Love You I Do" is extended by adding an instrumental break under the scene in which Michelle gets a job at Rainbow Records, and then showing Effie sing the song's second verse on camera
• "Heavy" is extended by adding a break and a chorus, and placing more emphasis on Effie keeping an eye on Deena's image taking over the TV studio monitors
• There is an extra shot of Curtis and Deena's mansion as Deena heads to the service car outside
• An extra scene shows Curtis, C.C., Wayne and other Rainbow executives at a board meeting, at which Curtis decides to finance his "Cleopatra" film pet project with a 10th anniversary special (This scene includes two F-bombs by Jamie Foxx; the Director's Extended Edition is unrated as a result)
• "Patience" is extended by adding extra choruses to the section in which Jimmy and Lorrell record the song, accompanied by a choir
• "Perfect World" is extended by including a full verse and chorus
• "I Meant You No Harm" and "Lorrell Loves Jimmy" are both extended by a few bars
• Jimmy's silent glare at Deena basking in her fame at the Rainbow 10th anniversary TV special is replaced by sung dialogue ("Because I was here long before you...") similar to the "Firing of Jimmy" scene in the original Broadway show
• "I Miss You, Old Friend" is extended by a few bars
• "Effie, Sing My Song" - sung dialogue in which C.C. and Effie reconcile - is added in place of the spoken word alternate version used in the theatrical version
• "One Night Only" is performed in full (only half is used in the theatrical version). At the conclusion of the song, Curtis' Mafia associates come to Effie's performance in Max Washington's bar, which is how they get word (and a tape) to alert Curtis
• Curtis has an extra line of dialogue when being interviewed on the Dreams' farewell performance red carpet, in which he announces that his new artist, Tania Williams, will be releasing her debut album in a month

Edited into Dreamgirls: T4 Movie Special (2007)