E'Voque book Docc Hilford
A specator chooses any number of dissimilar objects (usually around seven) and lays them in a row. A second participant looks over the group of items and jots down the name of one of them on a piece of paper. The first person is instructed to make several choices concerning the items. Half of them are eliminated, then a couple more are discarded. Finally, one object remains and it matches the item the second person chose before any objects were removed!
This is an incredibly powerful effect. You'll have to hear the gasps of amazement and see the sparkle in the eyes of your audience for yourself