One thing, that I want to do before my spaceflight, is weightless flight (Zero G). I will do the flight during my California trip this September. There is a modified Boieng 727 -airplane which will do the flight. During the flight there will be 20-30 seconds weightless periods about 12-15 times. When I will got used to weightless environement, my spacefligth will be easier.

http://www.gozerog.com/