It reserves singing and dancing for the stage until Jamie Foxx just randomly bursts into verse while strolling down the street. Dreamgirls wants to be Effie but ends up as Deena: thin, smooth, unburdened by a personality.
Condon's adaptation is polished and enjoyable and yet something is missing from making it a truly great musical movie--perhaps a more coherent vision or unity.
The opening rump-shaking immediately sets the tone: Dreamgirls pulses with sheer exuberance. When was the last time a musical, much less a huge Hollywood production, felt this alive?