Nu Way Out Of This World by U. F. Grant

A wonderful self-working rendition of the classic "Out Of This World" effect. This was the first real card trick I saw - and I was baffled.
A borrowed deck is shuffled. A red and a black card are placed face up on the table. The performer then removes cards, one at a time from the deck. Without the spectator seeing the faces of these cards, he indicates whether he thinks a card is a red or a black. If he thinks it is a red card, the performer places it, face down, on the face up red card. If the spectator thinks it is a black card, the performer places it face down on the face up black card. The performer even hands a pack of cards to the spectator to place them according to his liking on the red or black pile.

When the cards are finally turned face up, it is found that the spectator was 100% correct, he successfully called the correct color of each and every card!