8 19 2015-04-02 When Leonard and Sheldon are invited to speak at UC Berkeley, they take a detour to try to meet an idol. Also, when Bernadette and Howard battle over the fate of his Doctor Who TARDIS, Raj and Amy offer to settle the dispute with a game of ping pong. 5149888 20863 https://artworks.thetvdb.com/banners/episodes/80379/5149888.jpg false