Bob Fosse and Gwen Verdon's daughter Nicole Fosse is co-executive producer and supervised all aspects of the production, including the recreation of her father's original choreography.
This was originally supposed to be mainly a biography of Bob Fosse but the more the producers drilled into the material, they realized that there was equally meaty material with regards to Gwen Verdon's back story.
Sam Rockwell used to enjoy an occasional smoke but, having played the chain-smoking Bob Fosse, any lingering desire to return to cigarettes has been effectively quashed.