P3, NMH, Radiohead and Wiffle Ball on the DS?

So I was killing time at Game Stop the other day and happened to find a used copy of Persona 3, it even had the art book with it, SCORE! I've played the game for about 5 hours so far and I really like it. I don't think it's as great as I've heard everyone claim it to be but I'm having a lot of fun with it. One thing though, why is this game rated "M"? Is it just the whole shooting themselves with magic guns to make crazy ass creatures come out and do an attack or am I missing something in the game?

Not much to say about No More Heroes other than the fact that it's still awesome and I'm on the rank 3 battle with that damn homeless grandma bitch.

Also I know this is NVGR but I don't care, I got Radiohead tickets for May and I'm super psyched