Thursday TV Ratings 12/21/23: Dick Van Dyke Special and iHeartRadio Jingle Ball Mediocre, Big Brother Reindeer Games Rises for Finale (UPDATED w/Analysis)

Ratings Analysis: Big Brother Reindeer Games (0.32, +0.02) inched up for its CBS finale and was able to top a quiet Thursday night. In the 9 p.m. time slot, Dick Van Dyke: 98 Years of Magic (0.24) was rather modest but still outpaced NBC's rerun of Dolly Parton's Mountain Magic Christmas (0.20). The peacock network also re-ran Christmas At Graceland (0.23). The iHeartRadio Jingle Ball (0.29) was only passable by ABC standards but easily trumped Fox TV movie The Christmas Break (0.16). On the CW, Son of a Critch (0.04, +0.01) gained a hundredth, while Children Ruin Everything (0.03, 0.00) held steady.

Finals Update: All shows held their preliminary rounded ratings.

Time	Show	18-49 Rating	18-49 Share	Viewers (mil)	Network
8 PM	Big Brother Reindeer Games (F)	0.32	3	2.29	CBS
	iHeartRadio Jingle Ball	0.29	2	2.23	ABC
	Christmas At Graceland (R)	0.23	2	2.82	NBC
	The Christmas Break	0.16	2	1.13	Fox
	Son of a Critch	0.04	0	0.30	The CW
8:30 PM	Children Ruin Everything	0.03	0	0.21	The CW
9 PM	Dick Van Dyke: 98 Years of Magic	0.24	2	3.04	CBS
	Dolly Parton's Mountain Magic Christmas (R)	0.20	2	2.12	NBC
	Whose Line Is It Anyway? (R)	0.05	0	0.26	The CW
9:30 PM	The Great American Joke Off (R)	0.03	0	0.19	The CW
10 PM	Shark Tank (R)	0.20	2	1.23	ABC