Despite being one of Bill Murray's biggest fans, I have to say I was disappointed with this film. Everybody knows that Murray is a king of subtle humour, but the director takes this way to far for this film. Murray sitting washed up and lonely on his settee is remotely funny the first time you see it, but this film seems to rely on this shot several times, for almost a minute each time. That's just milking it I feel.
I enjoyed his visit to his first wife, it's the typical eccentricism you expect to see in an indie film really, but from then on the awkward silences that plague every visit he makes to women from his past become less and less funny and tolerable. Like Rollo, I would just describe this as lazy film-making.
I think your opinion of Jeffrey Wright may influence your enjoyment of this film. If you don't like him, steer well clear of Broken Flowers.