The AIDS action organization Cable Positive has enlisted director Bart Freundlich (The Myth of Fingerprints) and such celeb activists as Matthew Broderick, Jimmy Fallon, Idina Menzel and S. Epatha Merkerson for Weapons of Mass Instruction, phase two of its award-winning Join the Fight campaign. More than 100 cable outlets will be airing black-and-white promos featuring the stars in support of World AIDS Day.