I like this type of movie a lot. It's not a feel good movie, but just tells a quirky story of guy who could have had better times, and tries to deal with it in his own way.
It has some funny Ferrel'ish moments, but I'd say it's mainly a drama driven by the main character rather than a comedy.
The doesn't feel complete though, something is off and I can't put a finger on it. Guess some else has to watch and tell me. Definitely worth your while, especially if you like any of the "Similar movies" mentioned above.