In this ep of "The Big Bang Theory": Penny's been telling Amy and Bernadette about how he she loves Leonard but not enough to really commit to him. When Amy tells Sheldon while they and the rest of the gang-minus Howard who's still in space or Bernadette but with Stuart now-are at the movies, Sheldon later goes to Penny's apartment-while she's sleeping-and tells her she should stay with Leonard since he hates change. Meanwhile, Howard has been the target of several mean jokes from his two astronaut-mates. I'll stop there and just say this series continues to fire on all cylinders most of the time with the change of ways characters interact or of settings. Still, I'm looking forward to when Howard is back on Earth with the rest of the cast..