I saw the movie... Not that good a movie actually for such a great theme and musical era. But it got me into exploring and playing more of the mowtown music.
More on the infamous funk brothers :
The Funk Brothers was the nickname of Detroit, Michigan, session musicians who performed the backing to most Motown Records recordings from 1959 until 1972, when the company moved to Los Angeles. The Funk Brothers played on Motown hits such as "My Girl", "I Heard It Through the Grapevine", "Baby Love", "Signed, Sealed, Delivered I'm Yours", "Papa Was a Rollin' Stone", "The Tears of a Clown", and "(Love is Like a) Heat Wave".
The role of the Funk Brothers is described in Paul Justman's 2002 documentary film Standing in the Shadows of Motown, based on Allan Slutsky's book of the same name. The opening titles proclaim the Funk Brothers as "having played on more number-one records than The Beatles, Elvis, The Rolling Stones, and The Beach Boys combined."
source : wkipedia
http://en.wikipedia.org/wiki/The_Funk_Brothers