The Big Bang Theory Season 7 Episode 10
The Discovery Dissipation
Sheldon struggles with the criticism over his accidental discovery of a new element. Amy has Wil Wheaton stop by to lift up Sheldon's spirits by comparing his experience on Star Trek: The Next Generation to Sheldon's situation. It works and he offers to do more publicity to help the University.
Leonard comes home and tells Sheldon that he disproved the discovery. Instead of being thankful, Sheldon's upset that he no longer has a renowned discovery on his resume.
Raj stays with Howard and Bernadette for a week. He's a nice houseguest, but his presence disrupts the couple's marriage because Raj is a better spouse than either of them. He gets kicked out and goes to stay with Leonard. He proceeds to counsel Sheldon and Amy. It doesn't go well either.