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"The Clean Room Infiltration" is the fifth Christmas-themed episode of the television sitcom The Big Bang Theory, originally aired as the eleventh episode of the show's eighth season, on December 11, 2014.

Plot

Amy hosts a traditional English Victorian Christmas Eve dinner for the gang while the guys are conducting an experiment in the university clean room and accidentally let a bird in. To prove a point to Amy, a Scrooge-like Sheldon buys her the perfect gift to ruin her Christmas.

Availability

The episode is available on The Big Bang Theory: The Complete 8th Season DVD and Blu-ray sets, released September 15, 2015.

Cast

Actor Character
Jim Parsons Sheldon Cooper
Johnny Galecki Leonard Hofstadter
Kaley Cuoco Penny
Simon Helberg Howard Wolowitz
Kunal Nayyar Rajesh Koothrapalli
Mayim Bialik Amy Farrah Fowler
Melissa Rauch Bernadette Rostenkowski-Wolowitz

Guest Stars

Actor Character
Brian George Dr. V.M. Koothrappali
Dakin Matthews Santa
Michael Reetz Photographer

External links


Warner Bros.
Movies
Warner Bros. Pictures Christmas in ConnecticutGremlinsLethal WeaponNational Lampoon's Christmas VacationJack FrostFred Claus
New Line Cinema ElfThe Nativity StoryFour ChristmasesA Very Harold & Kumar 3D ChristmasThe Conjuring 2Shazam!
Blue Ribbon Content A Christmas Story 2A Cinderella Story: Christmas Wish
Made-for-TV movies National Lampoon's Christmas Vacation 2: Cousin Eddie's Island AdventureThe Year Without a Santa Claus
Live-action television episodes
Friends and Joey "The One With Phoebe's Dad" • "The One Where Rachel Quits" • "The One With the Girl from Poughkeepsie" • "The One With the Inappropriate Sister" • "The One With the Routine" • "The One With the Holiday Armadillo" • "The One With the Creepy Holiday Card" • "The One With Christmas in Tulsa" • "Joey and the Plot Twist" • "Joey and the Christmas Party"
DC Comics "Season's Greedings" • "Home is Where the Hurt Is" • "Twas the Night Before Mxymas" • "Lexmas" • "Gemini" • "Year's End" • "Three Ghosts"
Other shows "A Semi-Merry Christmas" • "Mel, the Magi" • "Mel's Christmas Carol" • "'Tis the Season to Be Jealous" • "A Christmas Story" (Growing Pains) • "A Christmas Story" (Just the Ten of Us) • "Santa on the Lam" • "Miracle on Elm Street" • "The Christmas Show" • "Fa La La La Laagghh!" • "The Man Who Canceled Christmas" • "It Came Upon a Midnight Clear" • "Deck the Malls" • "Christmas Day-Ja Vu" • "A Country Christmas" • "How the Finch Stole Christmas" • "Meet the Cuban Parents" • "Christmas Punch" • "A Clear and Presentless Danger" • "George Is Being Elfish and Christ-Misses His Family" • "Santa's Secret Stuff" • "A Very Supernatural Christmas" • "The Bath Item Gift Hypothesis" • "Christmas" (The Middle) • "It's Beginning to Stink a Lot Like Christmas" • "The Maternal Congruence" • "Jolly Red Elf" • "The World Ain't Over 'Till It's Over" • "The Santa Simulation" • "Give Santa a Tail-Hole" • "Home for Christmas"
Animated productions
Looney Tunes and related shows The Shanty Where Santy Claus LivesBedtime for SnifflesGift WrappedBugs Bunny's Looney Christmas Tales • "It's a Wonderful Tiny Toons Christmas Special" • "'Twas the Day Before Christmas" • "Jingle Boo" • "The Great Wakkorotti: The Holiday Concert" • "A Christmas Plotz" • "Little Drummer Warners" • "No Time for Christmas" • "A Pinky and the Brain Christmas" • "It Happened One Night Before Christmas" • "In Arms Way" • "The Twelve Days of Christmas" • Christmas Eve with Yakko, Wakko & Dot • "Noel" • "The Christmas Tree" • "The Banks of the Delaware River" • "Feather Christmas" • "Yule Be Sorry" • "Christmas in July" • Bah, Humduck! A Looney Tunes Christmas • "A Christmas Carol" • "Tis the Seasoning"
DC Comics "Christmas With the Joker" • "Holiday Knights" • "Frozen Out" • "Comfort and Joy" • "Storybook Holiday" • "Invasion of the Secret Santas!" • "Second Christmas" • "The True Meaning of Christmas" • "Teen Titans Save Christmas"
Hanna-Barbera co-productions "A Dickens of a Christmas" • A Scooby-Doo! Christmas • "Ho Ho Horrors" • Tom and Jerry: A Nutcracker TaleScooby-Doo! Haunted HolidaysTom and Jerry: Santa's Little Helpers • "The Plight Before Christmas" • "Scary Christmas" • "Scroogey Doo" • "It's a Wacky Life" • "Dashing Thru the Snow"
Other cartoons "Yuletide and Redtide" • A Cool Like That Christmas • "Santa Mask" • The Polar Express • "The Match Before Xmas" • A Miser Brothers' Christmas • "Da Grinchy Code / Duck" • "FROST / Undercover Claus" • "Fantastic Four Christmases / Red and White Collar" • Elf: Buddy's Musical Christmas • "Top of the Naughty List"
Albums
Have Yourself a Looney Tunes ChristmasA Hip-Hopera ChristmasMerry Christmas: Animaniacs & Looney TunesThe Looney Tunes Kwazy ChristmasA Looney Tunes Sing-A-Long Christmas
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