New DVDs you can watch this weekend: MARQUEE NAMES -- 'Obsessed' (PG-13) Beyonce Knowles plays a docile housewife who morphs into a woman possessed when a temp secretary begins stalking her husband. It's not a horrible movie, said The Post's Dan Zak, 'just intensely simple-minded. ... Unlike `Fatal Attraction,' there is no actual extramarital affair. Unlike `Basic Instinct,' there is no mystery to be solved. There is only a crazy stalker chick.' Extras include a featurette about the women's fight sequence. Also on Blu-ray. -- 'Race to Witch Mountain' (PG) This remake of the 1975 sci-fi adventure about two youngsters from outer space stars an appealing Dwayne Johnson, but it doesn't quite have the original's charm. Extras include deleted scenes and bloopers. Also on Blu-ray. -- 'The Soloist' (PG-13) Robert Downey Jr. plays newspaper columnist Steve Lopez in this true story of his friendship with Nathaniel Ayers' (Jamie Foxx), a schizophrenic street musician. The film is moving, said Post critic Ann Hornaday, but 'veers dangerously into Magical Negro territory, where black characters serve as vessels and vehicles for white benevolence and redemption.' Extras includes a short feature in which the real Ayers and Lopez discuss how they met and became friends. Also on Blu-ray. TV to DVD -- 'Agatha Christie's Marple: Series 4' New adaptations of four Christie mysteries. -- 'Brian Sewell's Grand Tour of Italy' The British art critic journeys across Italy. -- 'Flight of the Conchords: The Complete 2nd Season' This quirky Kiwi show was just nominated for an Emmy. -- 'Kate & Allie: Season 6' -- 'Labor Pains' This movie was supposed to mark Lindsay Lohan's big-screen comeback, but it ended up on ABC Family instead. She plays a woman who pretends to be pregnant to keep her job. -- 'The Love Boat: Season 2, Vol. 2' -- 'Project Runway: The Complete 5th Season' This popular fashion design show settles into its sixth season Aug. 20 on Lifetime, nearly a year after it was last seen on Bravo. -- 'Tim and Eric Awesome Show, Great Job!: Season 3' Ten episodes and bonus features from this sketch comedy show. COMING ATTRACTIONS DVDs being released Tuesday include: -- '17 Again' (PG-13) -- 'I Love You, Man' (R) 