There are certain things, many things, we've come to expect from a Quentin Tarantino movie, and unless John Travolta is jump-starting one with a shot of adrenaline, heart isn't exactly among them. That's why the primary shock of the writer/director's ninth feature Once Upon a Time … in Hollywood is that it's positively teeming with heart – an unabashed love letter to Tinseltown fringe figures of a bygone era who, as the fairytale title suggests, are eminently deserving of Happily Ever Afters.