ABC's Lost, the one major network TV drama that did not air its finale during the May sweeps, emerged as the No. 1 show of the week last week as its final show of the season averaged a 7.3 rating and a 13 share over two hours Thursday night. Nevertheless, the 12.3 million viewers who tuned in were 1.2 million fewer than those who watched last year's Lost finale -- and part of that one aired opposite the season final of American Idol. Most of the remaining programs on the Nielsen top-ten list were repeats, except for the CBS magazine shows 60 Minutes, which placed third with a 6.8/10 and 48 Hours Mystery, which tied for eighth with a 6.0/9. Nevertheless, even with repeats dominating its schedule, CBS remained the top network for the week with an average 4.9/9. Fox placed second with a 3.8/7. ABC was close behind with a 3.6/6, edging out fourth-place NBC with a 3.4/6.