A nice, but quite crap trick that nicely varies the pace of your hand-staff interaction. If one can imagine it you are spinning in the 'right' direction, or clockwise as some people call it. Then with your left hand do a hand wrap, this will slow the staff some, and move your grip significantly to one end of the grip. Now here you can start into a hand to hand contact roll. Obviously thought, doing it a lot slower and using both hands on the staff (but neither gripping it) to control its speed.
http://tutorials.firestaff.net/tutorials/tutorial-videos/wmv/other/Pace-Trick.wmv (Right click, save target as... )
Streaming Flash Video: