SERIES FINALE -- SHELDON THANKS HIS FRIENDS DURING HIS NOBEL ACCEPTANCE SPEECH IN STOCKHOLM -- Sheldon (Jim Parsons) and Amy (Mayim Bialik) travel to Stockholm for the Nobel ceremony with Leonard (Johnny Galecki), Penny (Kaley Cuoco), Howard (Simon Helberg), Bernadette (Melissa Rauch), and Raj (Kunal Nayyar). Howard and Bernadette worry about leaving the children, Raj brings Sarah Michelle Gellar as his guest, and Penny’s pregnancy becomes known. Sheldon first upsets everyone with selfish behavior, then changes his speech to thank each friend by name. TVPG