Weekly Ratings: 5/19 – 5/21

Tuesday Ratings: Did Glee Sing? Plus: NCIS and Other Finales

8 pm/ET
American Idol's final Season 8 sing-off delivered 23/07 million total viewers, up 6 percent week-to-week. NCIS' season-ender (poor Ziva...) netted 16.09 mil, up 210K. Reaper's likely penultimate episode drew 1.79 mil, down 200 thou.

9 pm
The Dancing with the Stars finale tangoed with 20.12 million viewers, on par with the show's year-ago disco ball hand-out. The Mentalist concluded its freshman run with 16.84 mil, up 720K. Fox's Glee debuted to 10.75 mil 1 and needs to resume its first season, like, yesterday! Fox notes that Glee was Tuesday night's No. 1 Twitter topic, while New Directions' version of "Don't Stop Believin" emerged as the No. 2 most downloaded song on iTunes. 90210's school year came to a close with an audience of 2.09 mil.

10 pm
Lagging far behind DWTS, Without a Trace bowed out — for good — before a crowd of 11.32 mil, dropping 16 percent week-to-week.

Ratings Highlights for Idol, Criminal Minds, Dance and More

Recapping some numbers from recent days:

Wednesday

• The American Idol finale played to a crowd of 27.7 million total viewers, hitting a high of 32.55 mil as Kris got crowned. That audience marks a 9 percent dip from last year, and the show's second-smallest finale draw ever, besting only Kelly Clarkson's Season 1 coronation (which aired during the summer).

• Criminal Minds closed its season with an audience of 13.79 mil, up 785K from its previous finale.

Thursday

• So You Think You Can Dance kicked off its new cycle with 8.78 million viewers, up 175K from its previous opener.

• Ugly Betty bowed out before 6.27 mil, plunging 28 percent from last year's finale. Friday night, here we come!

• Southland copped 6.4 mil for its freshman finale, up 38 percent versus last week's fantastically competitive slate.