Big Bang Theory Galecki Parsons Cuoco Published 25 February 2012 at 2000 × 1333 in The Big Bang Theory, the Bazingallery ! “The Vengeance Formulation” — coverage of the CBS series THE BIG BANG THEORY with guest star Katie Sackoff, scheduled to air on the CBS Television Network. Photo: Cliff Lipson/CBS ©2009 CBS Broadcasting Inc. All Rights Reserved. Share this:TweetShare on TumblrLike this:Like Loading...