THE BIG BANG THEORY
CBS, 8:00 p.m. ET
SEASON FINALE: Last year, our geek gang’s precious status quo was threatened when one of them was given the opportunity to take an extended voyage into space. This year, the season ends with another of them being offered a chance to take a long, remote trip: on a research vessel. And this time, it’s Leonard (Johnny Galecki), who’s just, at long last, getting into a comfortable relationship with Penny (Kaley Cuoco).