Aired Saturday April 13, 4:10pm - 4:40pmon E4

The Big Bang Theory

Series 9 Episode 15: The Valentino Submergence

Amy and Sheldon host a Valentine's Day edition of Fun With Flags, and Penny and Leonard wrestle with getting older. In the meantime, Howard and Bernadette make a discovery in their hot tub, and Raj is torn between Emily and another woman.

Holiday / Sitcom
Original air date
Cast and crew
  • Mark CendrowskiDirector
  • Johnny GaleckiLeonard Hofstadter
  • Jim ParsonsSheldon Cooper
  • Kaley CuocoPenny
  • Simon HelbergHoward Wolowitz
  • Kunal NayyarRaj Koothrappali
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