Via Tyler Cowen at Marginal Revolution..... A special-purpose charter flight.
We will take you up to over 5,280 feet above the earth's surface so you have the opportunity to join the exclusive "Mile High Club." For only $379.00 per couple, you and "your significant other" will have a one hour flight in a Piper Cherokee Six designed exclusively for this purpose. Also included is a bottle of champagne, a certificate of your accomplishment and you get to keep your sheet as a souvenir of this special event.
Less risky than the traditional method, I suppose, but somehow it doesn't seem like it would provide the same thrill.