Watch here : The Big Bang Theory 12x11 "The Paintball Scattering" Season 12 Episode 11 All Sneak Peeks - Penny and Leonard organize a paintball game that results in mayhem when Sheldon is jealous of Amy. Also, Koothrappali catches Anu with her ex-boyfriend, and Stuart doesn’t want to move in with Denise, on THE BIG BANG THEORY, Thursday, January 3rd on CBS.