I like this one a lot as it is amazing on both method + effect. Effect: [this video] I won't reveal the method but here it is in Penn's words (from 1:20): [link]
That was real! I mean he wasn't really angry but he really did have his mind blown. The backstory is that the magician in question (Kostya Kimlat) did a trick that Penn & Teller also do, and he did it more or less the same way they do it - except that at the end, at the part where P&T do the sleights that make the trick work, in Kimlat's version the effect was already done because he'd done a different sleight, earlier, about five inches under P&T's noses. It was pretty glorious. The trick: [this video] Penn talking about it: [link]
Trick that genuinely fooled Penn and Teller with an earlier sleight
I can just reiterate my prior comment: * [this video] (-: For M. Kimlat's own commentary and someone else's particularly insightful comment: * [link] For the time spent on prep for the second appearance: * [link]
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