Known as the What.CD of J-Music (Japanese Music: J-Pop, J-Rock, etc), and for good reason.
Running on Gazelle and embracing high quality more over everything else, the great thing with the tracker is that it not only encompasses albums and singles, but also music videos, DVD releases for music, subtitles for music videos, and more.
Home Page:
The community of the site is quite welcoming, with lots of activity on the forums and IRC, and new torrents being added all the time.
English is the main language spoken on the site if you're wondering.
There's also competitions going on, as well as some very nice touches such as JPopsuki TV, which streams music videos (J-Pop, J-Rock, Experimental music, etc) for all users to be able to enjoy if you're unable to torrent something from your current location (or if you just want to enjoy some streaming goodness).
This can be accessed easily via your web browser or through VLC or WinAmp and other players that support it.
Thankfully it's also not impossible to be able to keep a good ratio too; there's freeleech torrents, and Bonus points can be accumulated.
Content - 4/5
Community - 4/5