For those in doubt, this documentary is evidence that Robin Williams was a genious at improv

The 2-hour Marina Zenovich adulatory HBO biopic about the life and work of Robin Williams - Come Inside My Mind - is a must-watch for serious RW fans and probably also worthwhile for anyone curious about his work, his development as an artist and actor, and about comedy and comic acting as well - although this latter group, me included, would be happier w/ a 90-minute show. Of course it's hard, nearly impossible, to kill your darlings - and to a fan every minute of RW's stage presence is worth preservation - and that may be true, though outtakes and supplements for the hard core can be provided generously these days of course. Nevertheless, the film has some amazing footage of RW's early days in LA comedy, alongside many who have also gone on to great fame and success - e.g., Steve Martin, Billy Crystal - and terrific pieces going back over his whole life showing his extraordinary ability to invent material on the spot, to improvise from a theme, and to mesmerize any audience through the sheer force of his energy - and you have to wonder how anyone could maintain that level of manic intensity, on and off stage, for so many years (most can't, and the early death of John Belushi shows what might have happened to Williams had he not, at least for periods of his life, gone clear and pulled back from the fray). Among the highlights are clips from his solo, 2-hour, largely improvised show at Lincoln Center (he wonders aloud if Pavarotti that night was at the ImProv doing "Two Jews went into a bar ... "), many outtakes for Mork & Mindy and from several films, and his performance with S Martin in Waiting for Godot - a surprising and successful side journey from comedy and film. We also get a fair amount of info about his early life, and more than one would expect info from his first wife (nothing from his 2nd). Overall, I wish it were two one-hour episodes (have to admit I ditched on the last 15 minutes, most of which concerned his suicide), but there's so much in this film that will win over fans or even further impress that in the camp that it's worth seeing one way or another.