The "Jackson" in question is Gary Jackson, concierge at Barney New York's NorthPark outpost, who was profiled a year ago by our former colleague Ann Zimmerman in The Wall Street Journal. His name pops up today in the Houston Chronicle, where he offers "An ultimate insider's guide to Dallas." Because, after all, "He knows where the beautiful people eat, rest and play and is skilled at bringing a 'random list of lovelies'' together for fun in the Big D. Though he won't drop names, he shares champagne and sushi with A-list celebrities." (Random List of Lovelies -- first in our ongoing series of suggested book titles.) Guess his No. 1 shopping choice in town. Just guess. Go 'head. --Robert Wilonsky