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The Big Bang Theory

The Clean Room Infiltration

Series 8, episode 11, first shown 11 Dec 2014, 19 min

Our take

Two stories pulling in different directions: a pigeon loose in a laboratory, which gives Simon Helberg plenty of physical comedy, and a Victorian Christmas Eve dinner that is more sweet than funny. The holiday half is thin and Raj's father is stuck with dated jokes, but the gift exchange lands, showing how far a guarded relationship has come. It is a gentle end-of-year episode rather than one of the show's best.

What happens

Raj cannot host this year's Christmas Eve dinner because his soon-to-be-divorced father is visiting, so Amy volunteers and chooses the theme of a traditional Victorian Christmas, parlour games and all. On the day, Leonard and Howard are running an experiment in the university's clean room when a pigeon gets in through the loading dock and contaminates the place; they call Raj to help, and the three bicker, with Leonard and Raj assuming Howard left the door open, as the bird keeps outwitting them. Bernadette drives Sheldon to the party, singing Christmas songs on the way, while Sheldon, irked at being made to celebrate, plots to get back at Amy. That leaves Amy, Penny and Dr. Koothrappali alone at the dinner, where Raj's father talks of little but his marriage. Sheldon's plan backfires: Amy is delighted by his gift and gives him a thoughtful present in return, and the clean room trio end up singing Christmas songs themselves.

Can the kids watch it?

Rated 12 by the BBFC for infrequent moderate sex references; fine for most 12-year-olds and up.

Cast and crew

Starring

  • Johnny Galecki as Leonard Hofstadter
  • Jim Parsons as Sheldon Cooper
  • Kaley Cuoco as Penny
  • Simon Helberg as Howard Wolowitz
  • Kunal Nayyar as Raj Koothrappali
  • Melissa Rauch as Bernadette Rostenkowski
  • Mayim Bialik as Amy Farrah Fowler

Guest stars

  • Brian George as Dr. V.M. Koothrappali
  • Dakin Matthews as Santa

Writers

  • Maria Ferrari
  • Tara Hernandez
  • Eric Kaplan
  • Jim Reynolds
  • Steve Holland

Director

  • Mark Cendrowski