I just recently got into dance improvisation.  It's a whole new world for me.  I understand you know a thing or two about it? 
Improvisation is a free way to express yourself through dance. Artists like Michael Jackson are the epitome of dance improvisers and they love creating new forms of dance/expression. 
It makes sense MJ was a dance improviser.  He was so unique!  How can you tell the difference between normal dance performers and improv dancers?
Dance improvisation
Dance improvisation is the process of spontaneously creating movement. Development of movement material is facilitated through a variety of creative explorations including body mapping through levels, shape and dynamics schema.
Improvisation is a free, seemingly unstructured, less technically strict and impulsive form that draws inspiration from everyday dance practices and influences. It is a movement technique that is capable of evoking dramatic and thought-provoking content just as well as more codified western dance techniques such as ballet and non-western movement forms.
Dance improvisation is
not only about creating "new" movement but is also defined as freeing the body from habitual movement patterns (see Postmodern dance and Judson Dance Theater). Dancer and singer Michael Jackson combined improvisation in both of those definitions, insisting that he had interest in performing a dance to "Billie Jean" only if he could do it a new way each time.
A lot of improvisation is focused on finding a deeper way of comprehending otherwise concealed thoughts or feelings of an individual. Through the emphasis of instinctual, unpredictable,