Sunday night's premiere of CBS's Amazing Race: All Stars got off to a roaring start at 8:00 p.m. Sunday night, taking the lead with an 8.2 rating and a 13 share, but its audience dropped by nearly a third in the second half hour, as ratings fell to a 5.8/9. Earlier in the evening the overrun of Fox's telecast of the Daytona 500 NASCAR race put the network on top at 7:00, beating the usual winner, CBS's 60 Minutes. At 9:00 ABC moved into the lead with Desperate Housewives drawing the biggest numbers of the night, an 11.7/18. Brothers and Sisters held on to most of that audience at 10:00 p.m., registering an 8.0/13, coming in just ahead of CBS's Without a Trace, which posted a 7.4/12.