Hi there,
Pilates ( pih-lah-teez ) is a movement system that uses spring-driven machines as well as a series of floor exercises to increase strength, felxibility, stamina and concentration. There are infinite sytles and breeds, from rehabilitative Pilates to Pilates on a ball.
Here is a link where you can find some of the exercises with pictures. http://www.myfit.ca/exercisedatabase/pilates.asp
There are still many others and if you are interested in doing it at home try the book "Pilates body in motion" by Alycea Ungaro.
Regards,
Charlize29