Celebrities frequently promote products or good causes. Usually their expertise is valuable. Angelina Jolie can easily promote starving orphans, Al Gore helps fight global warming and Sarah Jessica Parker - she sells tap water. I'll admit I have not idea what in the hell Esquire's Tap Project is all about, but I'm the everyman, and to me Sarah Jessica Parker is selling a glass of tap water. I'm not doubting her promotional skills, but I'm sure I could build a scarecrow that could sell a glass of water - filled with sea monkeys and rust. And oddly enough the scarecrow would look a lot like Sarah Jessica Parker.