I know this routine plays real well for small groups. I can't, however, recall the exact name or where I read a neat, easy-to-do, routine in which the magi moves cards, one-by-one, from one goblet to another until the spectator says 'STOP.' That card matches his prediction.
I believe this routine was published in a book, not a magazine or video, but I could be wrong. Was pre-2007. Thanks for clues to where it was published.