A character piece about the life of one grumpy old, senile man. His issues are laid-out in grandiose & overly sentimental melodramatics. We as an audience are slowly dragged from sad set piece to sad set piece where the conclusions are obvious if only the film would spare us the "drama" and arrive at them already.
Manglehorn is an Indie that knows its an Indie and is closer to "Prince Avalanche" than any of the Directors other works. Al Pacino kills it here but instead of focusing on the solid dramatic acting, Green decided to over-direct this right into "trying to hard to be pretentious" territory.
Manglehorn is trying to re-connect with a long lost love while slowly driving away the things he does have in his life. He's struggling to be happy. Where in that the Director feels the need to have "LSD flashback" type sequences is lost on me.
It's not original nor refreshing to slowly plod an audience around in drab and everyday circumstances, throw some folk music or a harp in the background and call it "subdued" and "special". I don't need Jurassic Park Dinosaurs or anything but I don't need to see him feed his cat 37 times to realize he loves it. I don't need to see him get his mail 32 times before you get to the point of why. I just need Pacino, with something to chew on. I just need his character to fight these demons already. I just need his struggles, his journey and his resolution.
Instead you meandered for 90% of the film and slapped it together at the end with some attempt at an thoughtful ending that landed with about as much intrigue as a happy meal toy. What a wasted Pacino performance. 3/10