The movie Sheldon is referencing when he tries to 'blow up' Leonard's head with his mind.
What is Scanners
100
The overwhelmingly successful Christmas present that Penny gives to Sheldon
What is a napkin signed by Leonard Nimoy
100
Sheldon refers to his grandmother as this
What is Meemaw
100
The test Sheldon tells Raj he passed was officially his new roommate.
What is a blood test
200
Sheldon goes shopping with this character in "The Luminous Fish Effect"
Who is Penny.
200
Howard designed this malfunctioning system for use on a space station.
What is a toilet.
200
Raj uses this to overcome his selective mutism around women.
What is alcohol
200
Sheldon, Leonard, Raj and Howard work at this institution
What is Caltech
200
Sheldon knocks this many times
What is 3
300
In the episode "The Middle Earth Paradigm", Sheldon dresses as this for the Halloween party.
What is the Doppler Effect
300
This is Sheldon's middle name
What is Lee
300
Leonard and Sheldon were robbed in The Bozeman Reaction. These things were not stolen from the apartment.
What are comic books.
300
These moves defeat Spock in the game, "Rock-Paper-Scissors-Lizard-Spock"
What are Paper or Lizard
300
The secret ingredient in Sheldon's mom's cobbler.
What is lard.
400
The item that Sheldon and Leonard are trying to retrieve from Penny's ex-boyfriend's apartment in the Pilot episode.
What is a television.
400
The name of the owner of the comic book store the boys go to all the time.
What is Stuart
400
In "The Cornhusker Vortex" Raj becomes angry with Howard after losing his kite to Sheldon. Raj and Howard visit this landmark at the end of the episode.
What are the La Brea Tarpits
400
This band wrote and recorded the Big Bang Theory's theme song.
Who are the Bare Naked Ladies.
500
In "the Dumpling Paradox", Howard slept with Penny's friend in her apartment, forcing Penny to spend the night at Leonard and Sheldon's place. What popular science fiction show was Sheldon prevented from watching?
What is Doctor Who
500
The word that Sheldon says whenever he has pulled a good prank.
What is Bazinga!
500
This actress made her first appearance in this season's season finale as Amy Farrah Fowler.
Who is Mayim Bialik
500
The "Star Trek" actor that Sheldon finds himself pitted up against yet again in the episode "The 21-Second Excitation"
Who is Wil Wheaton
500
These two characters dated briefly on the show and also played dating characters on the sitcom "Roseanne"