Paranoia Agent

Allow me to begin by saying what a weird opening this anime has and it's kind of creepy too. Basically it features all the characters standing on the spot laughing. It's not my favourite opening to say the least.

Speaking of weird, Paranoia Agent is definitely that. I'd seen the box set on shelves and always wondered what it was about and then a friend of mine told me he had it so I borrowed it off him.