[@The Mad Hatter] Gotta agree with Yuuta on Paranoia Agent and Fullmetal Alchemist Brotherhood.  You should also check out JoJo's Bizarre Adventure if you're into some crazy shit as well.  The seasons tend to change into a different style.  For example, Part 1 is more horror based, while Part 4 is kind of like a team of investigators in a small town.  If you've played Persona, Part 3 and onward will remind you of it.