Sheldon watches an episode of Professor Proton's show.
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Penny talks to Sheldon before going to the funeral.
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Leonard consoles Sheldon after letting him know a hero of his died.
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The gang introduces Penny to Star Wars Day on May 4th.
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Sheldon and Penny go out for dinner together on "The Anything Can Happen Recurrence."
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Sheldon talks to Leonard wearing a robe in their kitchen.
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Is Sheldon sleeping with the Geology book? Nice robe!
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Sheldon has a Geology book. Why would he have that?
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Howard shows Leonard a drawing of ... something. What is that supposed to be?
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Barry Kripke annoys Sheldon and Howard during their lunch break.
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Howard arrive for his double date with his wife, Raj and Emily.
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Sheldon knocks on a hallway door with Amy on "The Relationship Diremption."
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TBBT Quotes

Penny: What actor holds the record for being named People magazine's Sexiest Man Alive?
Sheldon: William Shatner!
Leonard: I don't think it's Shatner.
Sheldon: Then it's got to be Patrick Stewart

Penny: Hey, Sheldon, did you change your Wi-Fi password again?
Sheldon: Yes, it's "Penny, get your own Wi-Fi." No spaces.