ABC was the most-watched network on Monday night, as roughly 20.3 million viewers tuned in to an extended 96-minute edition of “Dancing With the Stars” at 8 p.m., Nielsen estimated. Although ABC averaged more total viewers, CBS, the runner-up, edged ahead among adults 18 to 49, thanks to its popular half-hour sitcoms, including “Two and a Half Men” at 9 p.m. (14.4 million), which led the night among the 18-to-49 set. CBS also dominated the 10 p.m. time slot with “CSI: Miami” (15.5 million), easily outpacing both NBC’s “Medium” (9.5 million) and the last hour of ABC’s “Bachelor,” which averaged just over 8 million viewers from 9:36 to 11 p.m. NBC ranked third for the night, delivering its largest audience at 9 with “Deal or No Deal” (10 million) but struggling at 8 with “My Dad Is Better Than Your Dad” (4.4 million). Fox, fourth in total viewers, tied NBC for third among adults 18 to 49, broadcasting a repeat of “House” at 8 (7.5 million) followed by “New Amsterdam” at 9 (6.6 million). On Saturday night Nickelodeon’s “Kids’ Choice Awards,” with Jack Black as host and a performance by Miley Cyrus, drew 7.4 million viewers, the cable channel said on Tuesday. That audience — an increase of 1.3 million viewers, or more than 20 percent, over last year — was the largest in the show’s 21-year history.
