Christopher Gorham and Elaine Cassidy, Harper's Island

Some recent ratings highlights:

Friday
Are You Smarter than a 5th Grader schooled 5.7 million total viewers, a 33 percent surge from its season opener. Lead-out Mental (3.68 mil), in turn, enjoyed a 250K bump. 

Saturday
Harper's Island sewed up 13 episodes of slicing and dicing before an audience of 3.84 mil, up 8 percent from its last outing. Elsewhere, Kings (1.64 mil) gained 340 thou and Eli Stone signed off for good with 2.76 mil. 

Sunday
Big Brother 11's first Sunday airing drew 6.76 million viewers, making it the night's second most-watched program (behind 60 Minutes, 7.9 mil). NBC's Merlin (3.65 mil) saw 15 percent of its audience magically disappear. The Peacock's Meteor premiered to 5.04 mil, but really — Marla Sokoloff versus Armageddon? 

Lifetime's Drop Dread Diva weighed in with a premiere audience of 2.8 mil and the cabler's best delivery of women 18-49 since Army Wives' June 2007 arrival.

Crave scoop on your favorite TV shows, from this summer or the upcoming fall season? E-mail senior editors Matt, Mickey and Tim at mega_scoop@tvguide.com and follow TV Guide on Twitter.