Sheldon's major scientific breakthrough makes him feel like a fraud. Meanwhile, Howard's romantic gesture to Bernadette causes Penny to step up her game with Leonard.
Guest Cast
Cast Appearances
Kaley Cuoco
as Penny
Episode Discussion
Login to leave a comment on this episode.
We couldn't have imagined how good our lifes would get, from the moment that we met you, Bernadette ♫♪