Ratings: Chuck Out of Luck?

Chuckjust might be out of luck. The NBC show attracted only 4.06 million viewers Monday night, finishing fourth in the five-way race in prime time's first hour.

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It doesn't bode well for a show already on the bubble that its penultimate episode got a smaller viewership than the previous week — and tied its series-low with an anemic 1.3 rating among 18-to-49-year-olds. Chuck has one final chance next week to justify a fifth season. (Cross your Subway sandwiches, fans.)

Dancing With the Stars' two-hourperformance show easily won its time slot with 20.19 million viewers and a 4.1 demo rating.

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Against Chuck and Dancing, House— which was renewed Tuesday —got 7.77 million viewers vs. How I Met Your Mother (6.36 million) and the CW's 90210(1.46 million). At 8:30, Mad Love on CBS scored 5.15 million.

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At 9/8c, another rerun of CBS' Two and a Half Men drew 6.37 million against fresh outings of Fox's The Chicago Code (5.71 million), NBC's The Event (3.77 million) and the CW'sGossip Girl(1.46 million). At 9:30, a new Mike & Molly got 7.50 million.

Castle kept up its late-season shellacking of Hawaii Five-0  in prime time's final hour — 12.64 million viewers to 9.17 million; it also posted a 3.1 rating in the demo vs. Five-0's 2.3 The hour's usual also-ran, Law & Order: Los Angeles(4.81 million), came in third.