I have absolutely no idea what movie the vast majority of commenters were watching... For a start, Pennebaker's style of documentary is grainy and gritty through *choice* not "amateurism". It's called REALISM. I first saw "Ziggy" in a movie theatre in Germany and was completely blown away by its energy and freshness. I think it's a sad state of affairs that modern audiences are so dulled by CGI and DVD extras, that they can't appreciate a mind-blowing piece of cinema verite like this. This movie captures all of the sweat, hysteria and sheer balls of Bowie's final performance as Ziggy Stardust, and it's incredible.