Playing Final Fantasy, Kingdom Hearts, and the Persona games have garnered my audio attention for the Japanese-Pop genre. I really   would like to start listening/buying  to some J-pop music , but i have know idea where to start or what to look for. If anyone's got some artist/song recommendations shout'em out!! 
 
 p.s. I'm Hispanic so i have a tendency to hate Anime, but love them ending credits 

I've only heard two songs, but M.O.V.E. is pretty good. "Gamble Rumble" and "Dogfight" are great.
 
Not sure if it's more J-Pop or Techno, but it's freakin' awesome.
 
Gamble Rumble:
 

 
I'm posting J-POP hits from the Anime Macross Frontier.  I know that you said you don't particularly enjoy Anime but Macross Frontier is a show almost entirely based around music, J-Pop to be exact.  It's really about music being able to allow different species (aliens and us) to being able to communicate and find peace.  A lovely if trite message.  I loved this series even though it was mostly a fanservice tribute to the original Macross (which was essentially the same story with different aliens and had more drama than the entirety of Dallas and Dynasty combined).  Still, there's definitely something to be said for any series that manages to put transforming mecha, alien monsters and awesome music into a stew (not a curry) and make it utterly delicious entertainment.
 

Funny you should ask. I'm going to an Utada concert tomorrow, and a High and Mighty Color concert in April. High and Mighty Color is the best. Back-On is also great.
  

If you like the Kingdom Hearts intro than you will prbly like Hikaru Utada because she is the one who sings it 
http://www.amazon.com/s/ref=nb_ss?url=search-alias%3Dpopular&field-keywords=Hikaru+Utada&x=0&y=0

You should probably just listen to any of the BECK soundtracks. It's more rockish stuff, but it's damn catchy.

I freaking love the soundtracks for Persona 1, Persona 3 and Persona 4 
 
Am I a fan of J-pop?

Funny thing, the only Japanese i listen to are "character songs" from seiyus. the only band i actually follow is FLOW.

Grind some glass and suger into a fine powder and stuff it in your ears, same thing.

I like Halicali.  I discovered them because they did a song for the anime Eureka 7 ( "Tip Tap Tips" ), and I really liked it.  I sought out other works by them and found I their catchy pop harmonies really appealed to me.  This isn't deep stuff, but I like it.  It's been on my Ipod playlists for a while now.  
 
I've also bought a couple of albums by Puffy Amiyumi (just "Puffy" now I think).  I picked up my first album because it had the title track to the Cartoon Network show, Teen Titans.  However, I really loved all the other stuff on the album more.  I'm not sure how "purist" fans of J-Pop feel about them because several of their hits are in English too, but when it comes to music who can say who is right? 
 
For male performers, I've recently gotten into Inoue Joe.  Again, this one was because of a cartoon.  In this case, I was watching fansubs of Naruto Shippuden ( "Closer" ) and he did the 4th season title song.  So, again, curious I looked around and found more material by him.  The stuff I really liked was upbeat and catchy. 
 
I would be remiss if I failed to mention Megumi Hayashibara, also.  She was actually the first J-Pop artist that attracted my attention about 15 years ago.
 

No offense but, why are you listening to jpop?

Here is what I listen to: 
 
Ayumi Hamasaki 
Nami Tamaki  
Mayumi Gojo 
Brilliant Green 
MiChi 
See-Saw 
High and Mighty Color 
UVERworld 
Stereo Pony 
Angela 
 
And sooooo many more. 
Don't ask me to name songs, cause ill give you a list of a gazzilion.

The closest I've ever come in my life to listening to J-Pop is the background music in Giant Bomb's TGS coverage.

wow no one has posted this ? lol 
 
 

   
 This is what I think of whenever i hear about J-pop 
 

" I couldn't believe this, but there is actually a J-Pop concept page on GB. Awesome. "

Wow, a lot of those videos have some pretty hardcore Naked Cartoon Pussy.

Both of these are pretty good in the J Hip Hops i recommend getting some albums
  

My recommendation is to not listen to J-Pop.
 
@SeriouslyNow said:

"