"This is the Pet Rock of the new millennium," comedy writer Joe Wilson told E! Online in 2005 after he and a friend staked out the Hollywood premiere of the Brangelina blockbuster Mr. & Mrs. Smith so he could bottle the couples' exhaled oxygen and sell it on eBay. The 1-quart mason jar o' air sold for $529.99 to online casino GoldenPalace.com, a collector of random memorabilia.