By Margaret Lyons
Updated April 03, 2009 at 11:02 PM EDT

The series finale of ER ruled Thursday night, bringing in more than 17 million viewers between 10 and 10:30 p.m., the show’s highest ratings in years. (Though still nowhere near its numbers during its ’90s heyday.) In the Motherhood and Samantha Who? both saw substantial drops this week, with Samantha falling all the way down to 4.8 million viewers — a major drop from its 10 million-plus watchers earlier this season (when it aired after Dancing With the Stars). Survivor‘s and Bones‘ numbers both dropped slightly, and CSI was down to 14 million from its season average of over 17 million.