I'm also going to try that out demon.
Here is my routine that I use, I got it from a few different magicians. Anyway, you have a paper bag with the deck inside it fold it up until it gets to a small square. Tell the spectator to take out an invisible deck of cards, shuffle, and select a card, then you have 4 random volunteers to pick if its going to be red or black, high or low, even or odd (you discuss that jack=11, queen=12 and so on...), and the suit, then you have the card. Just so you randomize it you can throw out pieces of paper into the audience and who ever catches it volunteers (if its a big enough crowd). After that you tell them to reverse the deck and "throw" the deck back and you have your hand inside the paper bag and you snap the outside to make it sound like it fell in the bag. It sounds confusing, but the concept is easy, and the audience always gets a laugh, maybe not always, but you'll almost always hear a chuckle. Then after that I pull the deck out, and say ok, the card color was (the random person who got chosen yells it out, and you do this for the other three things. Then you reveal to them that that random card has flipped itself over in the deck.
I always get great reactions with this trick because nobody can even think of explanation to this trick.