One of the best things you can do during the day in Las Vegas is to go see magician Mac King at Harrah's. Afternoon shows there are often lame but Mac's is terrific, which is why he's been doing it there for sixteen years.
There's a pretty elementary trick called the Cut-and-Restored Rope which every beginning magician learns. I did it when I was ten. Mac took it and jazzed it up and made it more elaborate and now it's the envy of professionals everywhere. The last time Mac was on Penn & Teller Fool Us, he didn't fool them — didn't really try — but Penn did say something like, "We're glad you didn't do the rope trick because we've never been able to figure that one out." Here it is…