The Big Bang Theory - Season 8 Episode 16
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8x16 | The Intimacy Acceleration
February 27,2015, 02:00AMAs a joke, Sheldon and Penny try an experiment designed to make participants fall in love. Also, Leonard, Amy, Raj and Emily spend the evening trying to escape a room with a “zombie.” And, after returning from Mrs. Wolowitz’ funeral, Bernadette and Howard run into trouble at the airport.