CBS’ 8 PM return of Big Brother to Sunday night (1.8/6, 5.76 million viewers) came in 22% short of last Thursday’s time period premiere to tie its lowest-rated Sunday launch to date. It was, nonetheless, the night’s top rated broadcast in the demo, as well as 18-34 and 25-54.

After BB, CBS’ Reckless unveiling (0.7/2) tumbled 79% from last summer’s highly hyped premiere of Under The Dome (3.3/9). Following Reckless, Unforgettable (0.9/3) bounced 13% from its most recent telecast (0.8/3), and on par with its in-season debut on April 4. CBS finished first among viewers (6.1 million) for the night, but tied ABC in the demo (1.1/4).

ABC’s new Rising Star (1.3/4, 4.7 million viewers) won its 9-11 PM block in the demo, built on its lead-in with viewers  (18%) and in the demo (20%), and grew from its first hour to its second in the demo. But, it tumbled 20% compared to last week’s series debut in the demo, and lost 24% of its 18-34 crowd. ABC would rather you focused on Rising Star’s improvement of the two-hour time period versus a year ago on the night by 57% in total viewers (vs. 3.0 million) and by 50% in the demo (vs 0.8/2).

Earlier in the night, ABC’s America’s Funniest Home Videos repeat logged a 0.9/3 and 4.56 million viewers, followed by Wipeout (1.04, 4.0 million viewers), which was down 9% compared to previous week’s season debut.

From 9-11 PM, NBC’s “special” edition of Last Comic Standing (1.1/3) finished within a tenth of a rating point of No. 1 in the time period among the broadcast networks in the demo by coming within a tenth of a point of ABC’s Week 2 telecast of Rising Star.  From 9-10 PM, Comic tied Fox’s comedy repeats in the demo (1.1/3). Fox’s Family Guy repeat was the night’s highest-rated among 18-34 year olds, and the second highest-rated of the night in 18-49.