Best Bets on TV tonight


September 15, 2007 at 2:00a.m.

“The Shopping Detective” (11 a.m., Fine Living): A tutorial on how to shop efficiently.

“Heavyweights” (9 p.m., Food Network): This new series revisits memorable clashes of food-industry titans. Back-to-back episodes tonight explore the ice cream grudge match between Haagen Dazs and Ben and Jerry’s, and the cola wars between Coke and Pepsi.