A while back there was an interesting fellow who came by here claiming he could do this. I was giving it a try and it's definitely a hard skill to come by.. I was never able to achieve anything

And he sorta stopped posting so I never really got much followup, but here's so of what he did post:

http://dreamviews.com/community/showthread.php?t=80879
http://dreamviews.com/community/showthread.php?t=80881