Wayne has come up with a winner that you will be sure to use time and time again.
You ask a spectator to THINK of ANY card in a deck (no force of any kind). You remove from your pocket a piece of paper showing a list of card values (no suits) which you ask them to concentrate on. You unfold the paper claiming that you can reveal the identity of the thought of card by asking a series of questions. A series of gag answers is then given to the spectator upon each new unfolding of the paper until you finally name the card that was merely thought of in the beginning.
To take the effect one step further you open the paper for one final time and there are a series of cards printed in a random scattering across the page. A second spectator is asked to glance over the cards and think of one. You then proceed to name the card that is being thought of by the second person.
This effect is easy to do, comes complete with props and an instructional DVD outlining the routine.
If you are looking for strong, commercial, fun and easy to do effect that packs a punch, The Big Revelation by Wayne Dobson is the one you're looking for!