ABC's Ugly Betty aired its series finale Wednesday night, and the results weren't pretty. The episode drew 5.4 million viewers, slightly better than its season average but nevertheless putting in last place in its 10 00 p.m. time period. By contrast, CBS's CSI NY came in first with 10.9 million viewers and NBC's Law & Order SVU drew 5.6 million. The top-rated show of the night, of course, was Fox's American Idol results show at 9 00 p.m., which drew 20.6 million viewers.