A Dutch rapgroup (there's a lot of crap dutch hiphop, but these guys are great):
http://www.opgezwolle.nl/
http://www.myspace.com/opgezwolle
On their official page go to Download and listen to some stuff, that's not their best though. "Tunnelvisie" and "Hoedeplank" on their Myspace page are a better example.
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Another Dutch hiphop formation, but this is with English rap. Perquisite plays quite some instruments and is heavily influenced by Jazz music. Think of A Tribe Called Quest, but different:
http://www.petephillyandperquisite.nl/
http://www.myspace.com/petephillyandperquisite
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