Joey,
This is a very magical thing. Ive been performing this A LOT, and the reactions are incredible because the bills change while the spectator is holding them.

I love it

Everyone I have spoken to that has tried this handling has gotten great mileage out of it. It's great to have in your hundy arsenal. It allows you to repeat hundy while a few people that have seen it before are watching (since it was so good the first time). As for putting the bills in someone else's hands, you have to use your best judgement. I wouldn't put them in a kid's hand for example or someone that isn't being the most cooperative. With good judgement, you will never have an issue with this.

D

I use the Dan White's handy 500 handling, but I change the bills in my own hands. The result is a safer and just as visual transformation of the bills!

I keep reading about White's version. Anywhere I can see the routine?

Hundy 500 is great. But I prefer "Easy Money" by Patrick Paige.

My problem with "Handy" is the curling of the bill always looks "rough" due to the stiffness of the bill (that's all I'd better say...). Even in the exposed views on the "Juan" DVD Dan has a hard time doing the change smoothly.

Instead of looking like I'm merely wiping the stationary bill with my hand, it's obvious that I start off touching the bill, then my hand rises up an inch or so above the bills, then goes back down to flatten the flap. That's necessary because the flap won't curl smoothly, as mentioned above. Unless the view is from directly over my hand, it's clear my hand is moving the flap.

Even during the performance portion of the DVD it's not a convincing move, IMHO.