Still

You probably know Michael J Fox is Canadian, made Back to the Future and has Parkinson's disease.

What you might not know is how resilient, brave, funny and charming he is.

What you probably don't know is he falls over a lot and walks like Billy Connolly doing the Glaswegian drunk man impersonation.

In this documentary that is brilliantly directed by Davis Guggenheim there are two stars.

Michael J Fox who narrates the movie, to camera, with his mangled voice often quite difficult to comprehend and Michael Harte, the editor.

It's a piece of magical illusion because somehow the directing/editing team have managed to piece together snippets of Fox's work to sit alongside Fox himself in 'telling the story'. It has echoes of my all time favourite documentary, 102 minutes that Changed America, in that it's essentially 'found footage that's used to tell the story. It's remarkable.

But at its core is the sad (not sad) sight of Michael J Fox, that lovable little scamp, at 61 looking like a wreck, but still, somehow defying the hideous encroachment of Parkinsons with dignity and humour.

It's very moving and it's very great.