Ratings Chart Attack!

NBC’s “Deal or No Deal” returned for a summer run with its lowest Monday night rating ever, while ABC’s “Castle” posted a gain.

NBC’s “Deal” scored a 1.2 rating/3 share among adults 18-49 and pulled in 4.4 million viewers, according to final figures from Nielsen. The show posted gains from its first half hour to second (1.1 to 1.3), but averaged its lowest-rated Monday night ever. “Deal” also failed to improve on the preceding time-period average posted by “Chuck” in the hour. "Deal" scored a 50% decrease from last week’s finale and the show’s season average. At 9 p.m., a two-hour “Medium” (2.2/6, 7.2 million) matched its previous series low and remained flat over last week.

Without a “Surviving Suburbia” lead-in, ABC’s “Castle” (2.8/7, 10 million) posted a 40% increase from its performance last week against regular competition in the hour. From 8-10 p.m., “Dancing With the Stars” (4.8/13, 20.3 million) was about par with its previous season-to-date average and posted a 12% increase over last week in the demo. “Dancing” also ranked as the top show of the night in total viewers.

CBS had the top show of the night with “Two and a Half Men” (5.0/12, 14.2 million), while “Rules of Engagement” (4.1/10, 11.3 million) had a slight bump over last week. In the 8 p.m. hour, “The Big Bang Theory” (3.4/10, 9.2 million) and “How I Met Your Mother” (3.6/9, 8.9 million) were in line with recent performances. “CSI: Miami” (4.0/11, 13.7 million) showed a hefty 21% increase over last week’s performance.

A new episode of Fox’s “House” (4.6/13, 12 million) was flat over last week, while “24” (3.3/8, 10.1 million) was only down one-tenth of a point.

On The CW, “Gossip Girl” (1.1/3, 2.2 million) increased 10% over last week, while “One Tree Hill” (1.1/3, 2.2 million) remained flat. For the night, the network averaged a 2.7/7 among women 18-34.

For the night: ABC (4.2/11, 17 million) edged out the others for a win in the demo and its 10th consecutive Monday-night win in total viewers. CBS (4.0/11, 11.8 million) and Fox (4.0/10, 11.1 million) tied for second, followed by NBC (1.9/5, 6.3 million) and The CW (1.1/3, 2.2 million).