On another site, you said it was David Copperfield who did it. My suggestion though is to not try to copy someone else.
I agree, fallingblood. I love the trick, but the audio soundtrack was too bland for my taste. So I downloaded a recording program, and I completely re-wrote the script. Finally, I put my ability to do offbeat voices to some good use.
Now I have a more tailored(and certainly more lively) audio track to this routine. Thus making it far more entertaining and unique.
I don't mean to boast, but I'm pretty proud of it.