DYNAMO by NATIVE INSTRUMENTS
Dance Music Creation Pack - This one will bring the house down-
DYNAMO opens the way into the fascinating world of REAKTOR at a sensational price: the 25 instruments of the present NI Premium Library which are included can be integrated perfectly into your studio via VST 2.0, ASIO, Digidesign DirectConnect and the Logic MIDI-environment.
Also, look at MK-125 Dance Station.