Here's a video of a Mahdi Gilbert card magic show at Magic-Con 2012. Madhi's a 20 year old magician from Toronto, whose arms and hands are affected by a congenital condition. His sleights and routines are rather novel, adapted for his anatomical quirks, and his mastery is indisputable.
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They also link to this conversation Jeff Pinsky from the Browsers Den had with Mahdi a couple of years ago:
Mahdi's video has since been spread far and wide! Some sightings:
[h/t: The Magic Demon]