Ira Flatow

Sheldon faces a crisis after Leonard disproves his accidental scientific discovery. Meanwhile, Raj must stay with Howard & Bernadette for a week.

After he's humiliated on National Public Radio, Sheldon vows to destroy Kripke (guest star John Ross Bowie), and the guys help, Sheldon exact his revenge. Meanwhile, Wolowitz tries not to destroy his new relationship with Bernadette (guest star Melissa Rauch). Katee Sackhoff (Battlestar Galactica) makes a cameo as Wolowitz’s dream girl.

Leonard angers the university – and the entire physics community – after he gives an embarrassing interview. Also, Amy and Bernadete bond over having to hide their success from Sheldon and Howard. NPR Host IRA FLATOW returns as himself, and REGINA KING returns as Mrs. Davis.