1. Leonard pulls out all the stops for a romantic date night at home.
Watch The Big Bang Theory on Thursdays at 8/7c on CBS and CBS All Access.
When Leonard finds himself in hot water with Penny, he taps an unlikely love guru to help him out of a romance rut. Meanwhile, Howard and Raj put their heads together to solve a squeaky floor problem in Halley's nursery on an all-new episode of The Big Bang Theory entitled "The Romance Recalibration," which airs Thursday, Jan.19 at 8/7c on CBS and CBS All Access.