oo I've heard one song by BoA "Amazing Kiss" it's quite good. I love Hayashibara Megumi, she does so many of the songs from Ranma 1/2, my favorite anime ^^ I also really like Midicronica's "San Francisco" from the ending of the last episode of Samurai Champloo. Ooshima Michiru who does a lot of the instrumentals from Full Metal Alchemist is great as well. (I realize not all these are J-Pop, but I'm horrible at guessing genres so I'll name everything Japanese I listen to ) I also listen several Final Fantasy soundtracks, I <3 Nobou Uematsu I've gotten realy into Misora Hibari lately. She's was a very famous Enka singer, her music is beautiful. Also the bands L'Arc-en-Ciel, YeLLOW Generation, Pornograffiti, and best of all Cool Joke, are awesome. All of them do opening or ending songs for Full Metal Alchemist. I'm trying as well to span out and listen to bands that aren't linked to anime or video games, but they're so lovable