Tourist & Loose rivets, no fooling you two. The instant he lets go he is experiencing zero g. This fact was used to good effect in the production of lead shot and musket balls in days of old, since a liquid in zero g will form a perfect sphere.
NASA has what is called a "drop tube" at Brook Park, Ohio, in which they conduct zero g experiments in a vacuum environment. The working area of the tube is 432 feet in depth and 20 feet in diameter, allowing 5.18 seconds of zero g when the experiment is dropped.