In my experience- this is usually a bad idea, simply because you are focused on the TV Show, and not what's going on in your hands. So if you're doing the move wrong, you'll never know, and build up your muscle memory doing the wrong thing. Just a thought...
..and a good one. This bit of advice is sound if you're in the mastery/maintenance stages of your sleight of hand, but not as much in the earlier phase.
Pj