Annette Bening and Julianne Moore will lock lips playing lesbian mothers in “The Kids Are Alright.” The Christy Scott Cashman-produced movie debuts at Sundance on Monday. “How I Met Your Mother” star Josh Radnor will also make his directorial debut at the fest with “HappyThankYouMorePlease,” a Paper Street Films production co-starring Elia Kazan’s granddaughter Zoe Kazan to be screened today.