Deadly premonition is crazy. The characters, the music, the setting and the story are all absolutely insane and it's wonderful.
The graphics are terrible and the game play is mostly a poor Resident Evil 4 knock off but everything else is sublime.
The game has some frustrating and difficult parts later on in the game so I recommend playing through on easy. You won't enjoy this if you're expecting a tightly controlled 3rd person horror shooter. If you have an appreciation for the ridiculous however, you will enjoy this game.