Leonard can only bring one guest on a trip to see CERN's Large Hadron Collider (the world's largest and highest energy particle accelerator) in Switzerland on Valentine's Day.
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US Ratings: 16.2m viewers. Nielsen Rating: 10.3/15. Nielsen 18-49 Rating: 6/14.
Writers
Chuck Lorre (Story), Steven Molaro (Story), Jim Reynolds (Story), Lee Aronsohn (Teleplay), Richard Rosenstock (Teleplay), Maria Ferrari (Teleplay)
Director
Mark Cendrowski
Sheldon: Given that Saint Valentine was a 3rd century Roman priest, who was stoned and beheaded, wouldn't a more appropriate celebration of the evening be taking one's steady gal to witness a brutal murder?
Raj: If anyone's interested, I'll be spending this Valentine's in the same way I spend every Valentine's. Buying disoriented chicken from the supermarket, taking home, standing over the sink and eating out of the packet with my bear hands like an animal.
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