Ratings: NBC On Top; Castle Hits Series Low

NBC topped Monday with a double helping of Blake Shelton.

The Voice pulled in 12 million viewers and a 3.9 in the adults 18-to-49 demographic, down slightly from last week. Shelton's Christmas special Blake Shelton's Not So Family Christmas followed with 9 million viewers and a 2.8. That's on par with Revolution's performance in the demo and beat both Hawaii Five-0 (9.1 million, 2.2) and Castle (8.4 million, 1.7), which hit a series low.

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It was a down night overall as almost all shows fell from last week. Only The CW's 90210 (1.04 million, 0.5) and Gossip Girl (800,000, 0.4) were flat.8 p.m.
CBS: How I Met Your Mother 8.2 million viewers (3.0); 2 Broke Girls (R) 6.7 million (2.2)ABC: Extreme Makeover: Home Edition 4 million (1.0) [8-10 p.m.]Fox: Bones 7.3 million (1.9)NBC: The Voice12.2 million (4.2) [8-10 p.m.]CW: 902101 million (0.5) 9 p.m.
CBS: 2 Broke Girls 10.1 million (3.5); Mike & Molly 10.2 million (3.1)Fox: The Mob Doctor3.3 million (0.8)CW: Gossip Girl840,000 (0.4)10 p.m.
CBS: Hawaii Five-0 10.1 million (2.3)ABC: Castle 8.4 million (1.7)NBC: Blake Shelton's Not So Family Christmas9 million (2.8)