8:00 pm Biggest Loser: Families, NBC (2 hrs) NEW - Christian Siriano assists with the makeovers of the competitors. 8:00 pm House, Fox (1 hr) NEW - Thirteen is a bisexual doctor diagnosed with Huntington's. 9:00 pm Food Detectives, Food Network (30 min) NEW - Queer Eye's Ted Allen hosts a new series looking at common food myths. 9:00 pm Privileged, The CW (1 hr) NEW - A live-in tutor deals with two spoiled twin sisters in Palm Beach. Their personal chef, Marco, is gay. 10:00 pm Blush, Lifetime (1 hr) NEW - Nolan and Todd are the gay boys seeking the title of "next great makeup artist." 10:00 pm Rick & Steve: The Happiest Gay Couple in All the World, Logo (30 min) NEW - Logo's animated series returns for a second season.