Pacino IS great - he nails the hangdog/asshole thing in every frame. And I DO have a soft spot for David Gordon Green. AND Holly Hunter is excellent. BUT I'm not sure I can bump it higher than 3 stars in good faith. Too much magical realism to swallow and Messina is trying too hard/has little to work with. An additional half a star for the cat though.
Menglehorn is full of elegant missteps which is to be expected from a movie that deigns to make grand statements about life, love, and loss in an impressionistic quilt-making kinda scattershot way. Episodic stuff, definitely a cinema of moments. Some moments are more equal than others, natch. I have become convinced from seeing him w/ unaccountable regularity recently that Pacino really soars in scenes w/ women.
The only vivid things in the film are its colors because the rest lingers indefinitely in shabby tones, now and then interrupted by unreasonable incidents (even a musical one) and incongruous dreamy sequences.
Although the general narrative is quite slow and kinda maudlin, this film stands for two core approaches: first, it portrays an elder character with a poetic point of view and brings some kind of magic to his condition without making him "young at heart"; second, it is in that sense a very confrontational film in a world so filled with blatant idealizations of youth.
Al Pacino is one of the best actors of our time.