This group Shinsight Trio made a great jazz-rap album, one of the best albums of 06, Shallow Nights Blurry Moon.
I guess it was released in Japan, it was tremendously slept on though. I only found out about it via rateyourmusic.com. It seems that hiphopsite and the other rap sites/blogs all went Schiavo-comatose on this album. Hopefully they at least got some recognition in Japan.
The MC Insight is from Boston. The other 2 dudes in the group are the Japanese cats, the producer Shinski, & a DJ for the scratches on the 1s & 2s.
If you like jazzy rap beats you should definitely listen to this. Insight is a good MC also.
Here's a clip of their concert in Japan of the song "Good Music".