I do like the Ultimate Ambition by Daryl...
For those not in the know - the card is signed all over (both sides), a corner is torn off, then it's pushed visibly into the middle of the pack which is tied up with rope... A few seconds later it is pulled from the top of the deck!
I'm expecting it in the post imminently - so I'm all anticipation at the moment... but based on current performance, I'm with the other guys.... either Card-to-mouth, or paperclipped.
Which I used depends on the audience and the environment. I find paperclipped works better in a 'formal' table environment - but card to mouth is cool when on the street or in a bar.
Hadn't though of card-to-forehead though... Is there a recommended diet or drink to ensure it stays stuck long enough for even the slowest specs?
-C