Sheldon is still feeling guilty about the attention he's receiving for his accidental discovery of a new element. Amy decides she needs to find a way to help him cope and enlists Star Trek: The Next Generation actor Wil Wheaton to give him a pep talk.
Leonard also tries to make things better, but his efforts backfire – don't they always? Can anyone get through to Sheldon?
Meanwhile, Raj stays with Howard and Bernadette for a week, but they start to feel inadequate when he's the perfect house guest.
The Big Bang Theory, E4, 8pm
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