"Arthur Newman" has two promising threads - how a man can disappear and take on a new identity, and how quirky can the behaviour of a borderline crazy young woman be? In the course of the film the first, potentially interesting theme is derailed by the second. In his flight from his boring and disappointing old life, the hero takes up with the stray girl who involves him with assorted wacky escapades. Unfortunately as none of the latter is particularly interesting, the film ends with nothing of substance except sentimentality. It's awfully slow, and moments of interest are too few. Regrettably Colin Firth is all too good at depicting boring average men, which stands in the way of audience engagement. Emily Blunt doesn't invoke too much sympathy either, as it's hard to see any attractive qualities in her character beyond looks. So the film, as indeed the story in it, seems much ado about nothing. It's same-y and featureless, like the successive motel rooms they inhabit. Somehow it needs a wit and charisma transplant, but maybe I just feel that because I dislike sentimentality!