Harry Potter movie marathon (9am, ABC Family) - ABC Family is airing an all-day marathon of Harry Potter movies, beginning at 9am with "Harry Potter and the Sorcerer's Stone." "Harry Potter and the Chamber of Secrets" follows at 12:30pm, and then "Harry Potter and the Prisoner of Azkaban" at 4:30pm, and "Harry Potter and the Goblet of Fire" at 7:30.
Battlestar Galactica (7pm, BBC America) - President Roslin questions the judgement of Adama and Apollo when they put the fleet at risk to find Starbuck, whose Viper disappeared after a run-in with a Cylon patrol. A second episode airs at 8.
Dino Gangs (8pm, Discovery) - The remains of 68 Tyrannosaurus rexes are recovered in the Gobi Desert, and research suggests that the species may have been deadlier than previously thought.
A Fairly Odd Movie: Grow Up, Timmy Turner! (8pm, Nick) - A live-action version of the cartoon "The Fairly OddParents" finds 23-year-old Timmy (Drake Bell) wanting to remain a kid forever so he can hold on to his fairy godparents. However, he considers changing his mind when a grown-up Tootie returns to town.
Carson Nation (10pm, OWN) - Carson travels to Scottsdale, Arizona, where he helps a transgender woman who has lived as a man for 60 years.
Brooke Cain isn't always proud of the number of hours she logs in front of the TV, but her loss of brain cells can be your gain. From reality shows to sitcoms to the more serious stuff, Brooke keeps her DVR smoking so that she can help keep you in the know. Brooke also tweets for Happiness is a Warm TV (you can follow