The Cooper/Kripke Inversion
“The Cooper/Kripke Inversion” — Sheldon (Jim Parsons, right) is forced to work with Barry Kripke and faces a crisis of confidence, on THE BIG BANG THEORY, Thursday, Jan. 31 (8:00 â 8:31 PM, ET/PT) on the CBS Television Network. Also pictured: Mayim Bialik Photo: Sonja Flemming/CBS é 2013 CBS Broadcasting, Inc. All Rights Reserved.