Ep 1. The Date Night Variable

The Big Bang Theory season 6 episode 1 titled "The Date Night Variable" opens with Penny walking into her apartment to find a surprise waiting for her- Leonard has installed a new TV in their living room. As she admires the new addition, Leonard reminds her that it's their "date night."

Across the hall, Sheldon isn't too pleased with the idea of a date night. Amy suggests that they could have their own date night, and Sheldon reluctantly agrees.

Meanwhile, Howard and Bernadette are preparing to go out, and Howard is eagerly showing off the new car he rented for the occasion. However, their night doesn't go as planned when Howard's mom calls him with an emergency.

Back at Penny and Leonard's, everything seems to be going well until Raj shows up unannounced and disrupts their night. As they try to figure out how to get rid of him, he asks to join them on their date.

Sheldon and Amy's date night takes an interesting turn when they end up at a paintball match. While Amy is having fun, Sheldon is struggling with the competitive nature of the game.

Eventually, all the couples end up at a diner together, where things continue to spiral out of control. Howard's mom calls again, and Bernadette finally puts her foot down, telling him to turn off his phone and enjoy the night.

Overall, "The Date Night Variable" is a hilarious and chaotic episode that explores the different dynamics between all the couples. From the unexpected appearance of Raj to Howard's overbearing mother, the episode is full of twists and turns that leave viewers laughing until the end.