In a rare moment of genuine vulnerability, Sheldon visits Penny’s room at night to ask her "not to hurt my friend" . Subplots: Space Wedgies & Howard Substitutes

The episode's heavy lifting comes from Penny’s sudden uncertainty about her relationship with Leonard.

Penny confides in Amy and Bernadette that her feelings for Leonard might be a "new, better, boring kind of love," rather than the spark she's used to. Watch www xrysoi se The Big Bang Theory -S06E02-

"Whenever I'm around Sheldon, I feel like my loins are on fire. In the good way, not the urinary tract infection way."

"I was expecting us to be an intimate group of five. Now, we're going to be a faceless mass of six." In a rare moment of genuine vulnerability, Sheldon

When Sheldon learns of the potential breakup, he enters "panic mode" to preserve his social structure.

Things aren't going smoothly on the ISS. Howard is being relentlessly teased and even receives the first-ever "space wedgie" from his fellow astronauts. "Whenever I'm around Sheldon, I feel like my

(on marriage to Howard) "I'm basically married to a sexy Buzz Lightyear." The Fan Verdict