“The Countdown Reflection” — When Howard and Bernadette decide they want to be married before his NASA launch, the gang rushes to put on a wedding, on the fifth season finale of THE BIG BANG THEORY, Thursday, May 10 (8:00 – 8:31 PM, ET/PT) on the CBS Television Network. Pictured: Johnny Galecki (left) and Jim Parsons (right). Photo: Michael Yarish/CBS ????????2012 CBS Broadcasting, Inc. All Rights Reserved.