Thursday's ratings recap:
* 8 pm/ET
* 9 pm
ER's two-hour (and rather awesome) series finale was the night's most-watched program, averaging 16.2 million viewers and even flirting with 18 mil at the 10 0'clock mark. That tally represents the largest audience for the final episode of a drama series since Murder, She Wrote circa 1996. (Be sure to check out Trish's fantastic recap of the ER ender.)
CSI's William Friedkin-directed 200th episode placed second at 9 pm, drawing a season low of 14.38 mil. Facing stiff competition, Hell's Kitchen (7 mil) saw one-third of its audience get flambeed. Supernatural gained 110 thou, hitting 3.28 mil.
* 10 pm
Placing second behind ER, Eleventh Hour returned to an audience of 10.38 mil, down 12 percent from its last fresh episode.