Alot of good recommendations on here. I'll throw in another: Nujabes.
Nice productions of hip hop / lounge / jazz samples
<iframe width="420" height="315" src="http://www.youtube.com/embed/TUwRGPxCG_Y" frameborder="0" allowfullscreen></iframe>
<iframe width="420" height="315" src="http://www.youtube.com/embed/G4w21HcML2M" frameborder="0" allowfullscreen></iframe>
Nice productions of hip hop / lounge / jazz samples
<iframe width="420" height="315" src="http://www.youtube.com/embed/TUwRGPxCG_Y" frameborder="0" allowfullscreen></iframe>
<iframe width="420" height="315" src="http://www.youtube.com/embed/G4w21HcML2M" frameborder="0" allowfullscreen></iframe>