With TV's top-rated show, CSI, sidelined for the presidential debate, ABC's Desperate Housewives ranked as the week's most-watched program with 21.6 million viewers. How huge is that for ABC? Pretty freakin' huge, considering the network hasn't seen one of its scripted shows score a first-place finish since Michael J. Fox's farewell on Spin City in May 2000. The boffo bow as well as another strong showing from Lost helped ABC win the week among adults 18-49.