Watch | 711-s06-e01-tbbt

"The Date Night Variable," the Season 6 premiere of The Big Bang Theory (S06E01), centers on relationship shifts as Howard navigates marital disputes from space, and Sheldon and Amy celebrate their anniversary with an unexpected guest. The episode, which aired in 2012, sets the stage for the season by addressing the evolving dynamics of the main couples. You can watch the full episode on Max.