Ricky Jay has built himself a fair career as both a writer (Learned Pigs and Fireproof Women) and a character actor, but it practically goes without saying that he'll be best remembered as a master of sleight of hand with a deck of cards. YouTube has all kinds of clips of him doing what he does best that'll make your jaw drop.
This is him doing a "is this your card" trick with multiple audience members.
And here he is flummoxing America's favorite triangle head, Arsenio Hall.
One of the commenters pointed out that with 2:30 left to go, you can see Jay switch cards. I watched it a good half dozen times, I can see how he did it, but the smoothness with which he accomplishes this just makes it all the more astonishing for me.