Does anyone know any kind of effect where you ask someone to think of a card over the phone and you can correctly guess it? Does an effect like this even exist?
By Patrick Redford? The Wizard Product review wasn't too kind to that. http://www.youtube.com/watch?v=_jBGSuwOJRk&feature=player_embeddedHave you heard of double feature? It would be a good place to start.
In david blaine's book mysterious stranger he describes and teaches an over the phone card naming effect which he claims is so powerful, that it is the reason he was given his first TV special.