Out of This World has been hailed the card trick of the 20th century. 

During World War II, Winston Churchill almost missed a war meeting because he was hypnotized by a magician performing this effect over and over for him.
Out of This World became an instant classic with most serious card magicians having worked on the plot. The effect is simple, a spectator takes a face down deck and deals two piles intuitively. The piles are turned over and it is revealed that the spectator somehow managed to separate all of the red cards from all of the black cards.
The fifth printing includes ideas from Milbourne Christopher, Tommy Dowd, Ralph Read, and Sam Horowitz.