Tony Dovolani and Martin Navratilova

Dancing with the Stars had what head judge Len Goodman called its best premiere ever, but its premiere ratings are its worst ever.

Monday's Season 14 premiere averaged 18.5 million viewers and an all-time low 3.5 in the adults 18-to-49 demographic, down 13 percent from the fall premiere and a whopping 34 percent from last spring's premiere. Dancing beat The Voice (11.8 million, 4.5) in terms of viewership, but was trumped in the all-important demo. The Voice, however, slipped 13 percent in the demo for a season low.

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Thanks to Dancing's lead-in, Castle (11.9 million, 2.4) returned to a 14 percent bump in the demo, but was edged out by Hawaii Five-0 (9.14 million, 2.5). Smash (6.7 million, 2.3) fell a tenth to tie its season low.

CBS' comedies had split success against Dancing and The Voice. How I Met Your Mother (8.2 million, 3.4) and 2 Broke Girls (9.2 million, 2.4) were both down, while Two and a Half Men (11.34 million, 3.8) and Mike & Molly (9.83, 3.2) were up.

8 p.m.
CBS:
How I Met Your Mother 8.2 million viewers (3.4 demo rating); 2 Broke Girls 9.2 million (3.4)
ABC: Dancing with the Stars 18.5 million (3.5) [8-10 p.m.]
Fox: House 5.78 million (2.0)
NBC: The Voice 11.8 million (4.5) [8-10 p.m.]
CW: America's Next Top Model (R) .81 million (0.3)

9 p.m.
CBS:
Two and a Half Men 11.34 million (3.8); Mike & Molly 9.83 million (3.2)
Fox: Alcatraz 5.07 million (1.5)
CW: Hart of Dixie (R) .69 million (0.2)

10 p.m.
CBS:
Hawaii Five-0 9.14 million (2.4)
ABC: Castle 9.8 million (3.3)
NBC: Smash 6.7 million (2.3)