Aggie is right (although he is fan of the VfB ). These are all fantastic recordings. The 2 CD or LP ECM set 1961 (contains Fusion and Thesis) is highly recommended, the 2CD hatOLOGY set Emphasis & Flight, 1961 as well.
As a leader the following are recommended (some of them have been mentioned):
Introducing, Debut 1953
Footloose!, Savoy 1962
Closer, ESP 1965
with Gary Peacock, ECM 1970
Homage to Carla, OWL 1992
Mindset, Soul Note 1992
Not two, not one, 1998