Blind Wine Tasting

I have done this several times over the last couple of years, but over Thanskgiviing weekend we did a blind tasting of 3 white wines, 2 rose, and 4 red wines that we might serve at my eldest son's wedding nest summer.
The key element is to disquise the wine--the best is to take wrapping paper and cover the bottle from top to bottom. This is critical because it eliminates any preconceived notions that you have about the wine and allows you to really focus on the elements that you like and don't like about each wine without using previously awuired knowledge in the mix. Prior to the wraping, mark each wine label with the number or letter you are going to assign to the bottle on the outside of the wrapping, as well as the price. Put the idenitfier on the outside of the wrapping (bt not the price) and proceed with tasting. If you are going to be serving the wine with food, have some variety of things to nibble on with the wine, so you can get a sense of what it will taste like on it's own and with a meal.
Since you may not have an idea of the character of each wine, it is nice (but not bnecessary) to have someone else weigh in on the tasting order. We tried the whites together first, followed by the roses, and then the reds. We did not find a rose we liked (we all agreed we had better ones in the past, and would need to repeat this process down the road--oh dear :-). We found a white we were ok with but not in love with, so the search may continue there as well. We found two reds we loved (one of which, when unwrapped, was a perennial favorite--but it won, fair and square), and our work is done there.
Once the tasting has been done and discussed, and a consensus has been reached, unwrap the bottles. Then you can go about tasting them further, seeing whether the favorites hold up to further tasting. It is a great process for choosing mid-range priced wine for an event that is very fun for the hosts of the big event to get input from others, and have a little mini-party to boot.