The producer and director ran what was essentially a trade school for future stars and filmmakers like Jack Nicholson, Francis Ford Coppola and Pam Grier.
Appearing together for the first time since 2002, the band celebrated the film in a Q. and A. with Spike Lee at the Toronto International Film Festival.
The 40th-anniversary restoration of a great concert film is a funk spectacle. It has also united the band, which split in 1991, to discuss a landmark achievement.
The Jacob Burns Film Center in Westchester, a celebrated venue that enjoys backing from cinema’s A-list, has been roiled by the dismissal of one of its original leaders who was accused of bullying behavior.