Wednesday's ratings roundup:
* 8 pm/ET
A "special" two-hour edition of American Idol averaged 24.6 million total viewers, dropping 1.6 mil week-to-week. CBS' sitcombo of Old Christine (7.06 mil, down 380K) and Gary Unmarried (6.86 mil, down 210K) each dipped a bit. Knight Rider gained 450 thou to hit 5.4 mil, while this week's Lost repeat reaped 4.4 mil.
* 9 pm
Opposite Idol's greedy "special" second hour, Criminal Minds (13.26 mil) fell 600K, while Lost sank 11 percent to a series-low 9.76 mil. (That said, Lost was for a fourth straight week Wednesday's highest-rated scripted show in the key demos, and it built its audience from start to finish.)
NBC's Life dropped from last week's well-watched return, hitting a more typical 4.72 mil.
* 10 pm