CBS got a perky preem perf from “The New Adventures of Old Christine” on Monday, while gamer “Deal or No Deal” set series records for NBC and Fox’s “24” again impressed.

On a night when each of the Big Four had reason to smile, CBS prevailed in key demos with a boost from Julia Louis-Dreyfus comedy “Old Christine,” which placed second in its regular 9:30 p.m. slot (4.8/11 in 18-49, 15.09 million viewers overall) following a special preview seg at 8:30 (3.8/10, 12.36m), according to Nielsen.

After building slightly on its lead-in from “King of Queens” (3.6/10 in 18-49, 11.30m) at 8:30, the timeslot bow of “Christine” retained 91% of its 18-49 lead-in from “Two and a Half Men” (5.3/13, 17.37m) — a better hold than the other two comedies to bow in the slot for CBS this season.

Show, from Warner Bros. Television, fared best with women 25-54 (6.9/14).

NBC continues to see the numbers rise for 8 o’clock gamer “Deal or No Deal” (5.3/14, 15.52m), which was up 8% week to week to log the best regular-program demo score in the hour for NBC since May 2004. It didn’t lift “The Apprentice 5” (3.9/9, 9.57m), though, which was on par with the prior week’s third-place result.

Fox won the 9 o’clock hour in demos with “24” (5.8/14 in 18-49, 13.72m), which doubled its lead-in from a repeat “Prison Break” (2.8/8 in 18-49, 6.83m). “Prison” returns with original episodes next week.

ABC could be happy with the week-two showing of 10 o’clock unscripted series “Miracle Workers” (3.7/9, 9.09m). Although it remained third, it moved closer to NBC’s “Medium” (3.9/10, 10.30m) and rose 9% in 18-49 from its premiere.

CBS drama “CSI: Miami” remained in control at 10 (6.3/16, 19.01m) and was the night’s No. 1 show.