Altman

This isn't a tell-all doc about the iconic filmmaker: it's a love letter from his friends and family. With a terrific range of film clips, home movies, behind-the-scenes footage and never-seen stills, this movie explores how Robert Altman's work has forever changed the way Hollywood makes movies, simply because his inventive filmmaking style forced everyone else to try and keep up.

After getting his start directing industrial films in Kansas City, Altman made the jump to Hollywood in the late 1950s, annoying a range of studio executives with his preference for naturalistic, overlapping dialogue in television programmes. Then he made the jump to cinema and took the world by storm with M.A.S.H. In 1970, winning the Palme d'Or at Cannes and introducing the "Altmanesque" combination of earthy interaction, ensemble casts and political subtext. In his documentary, filmmaker Ron Mann cleverly asks many of Altman's actors to define the word Altmanesque, not as it relates to the movies but as it relates to the man himself.

Altman was a rare filmmaker who was loved by his casts and crews as well as the critics. Notoriously picky film journalist Pauline Kael famously wrote that "he can make film fireworks out of next to nothing", and this documentary demonstrates this with clips and backstage moments from his classics, ranging from McCabe and Mrs. Miller (1971), Buffalo Bill and the Indians (1976) and Popeye (1980) to The Player (1992), Short Cuts (1993) and Gosford Park (2001). The film's focus is on his movies, although it's narrated through personal interviews with Altman and his widow Kathryn Reed and features some superb footage of his sons. It also traces his ongoing health issues, from his heart transplant to his death from leukaemia in 2006. But there's little mention of his lifelong anti-war efforts or his controversial efforts to legalise marijuana.

Even so, his fans will love this superbly well-assembled collection of clips and images, which not only serve as a reminder of his work but also as a look at how he made his movies. And seeing them put together like this reveals a bigger picture in his filmography, as the interwoven story strands combine to tell a much larger story about the subversive and resilient nature of humanity. Altman did this by telling real stories that cracked through the surface of what most movies showed, letting honest characters and situations emerge without taking any of it too seriously. Watching this will make you want to revisit your favourites and catch up with the ones you may have missed.