Character Info
Actor Info
Theory
Dating
Episode Trivia
100
Howard's astronaut nickname comes from this children's cereal.
What is Fruit Loops?
100
This actress made her first appearance on the show as Amy Farrah Fowler in the season three finale.
Who is Mayim Bialik?
100
This eccentric project Sheldon completed during his brief stint of unemployment after insulting his boss.
What is Glow in the dark fish?
100
This is the name of Penny's long-term ex boyfriend.
Who is Kurt?
100
This contract was sign by Lenard in the first episode.
What is The Room Mate Agreement?
200
Amy conducts an experiment on this animal who smokes.
What is a Monkey?
200
This Cast member presented the award Best Performance by an Actor in a Television Series - Musical or Comedy at the 2011 Golden Globe Awards to costar Jim Parsons
Who is Kaley Cuoco?
200
Sheldon wears this costume at Penny's fancy dress party?
What is The Doppler Effect?
200
When Leonard first asks out fellow scientist Leslie Winkle, she test his dating potential with this method?
What is Kissing Leonard?
200
This Character loses their prized kite 'The corn husker Vortex.
Who is Raj?
300
We find out Sheldon's middle name in the 8th episode of series four.
What is Lee?
300
This cast member is the only cast member to have a PhD. In 2008, she completed her neuroscience studies.
Who is Mayim Bialik
300
At the end of the first season, this experiment was used as a metaphor for Penny's and Leonard's potential relationship.
What is Schrodinger's cat thought experiment ?
300
Penny's friend Christy has a fling with this character.
Who is Howard?
300
Sheldon try to lengthen his life span in 'The Cruciferous Vegetable Amplification in what way.
What is Jogging?
400
We find out that Leonard plays this instrument after being invited to play in a string quartet by Leslie Winkle.
What is cello?
400
In fall 2010, this actor revealed to "CBS Watch! Magazine" that she and her "Big-Bang Theory" co-star and love interest and this actor had secretly dated for two years earlier in the run of the show, but they were no longer together.
Who is Kaley Cuoco and Johnny Galecki?
400
This belief of Leslie Winkle's particularly annoys Sheldon.
What is Loop quantum gravity over string theory?
400
Sheldon's twin sister Missy is attracted to one of Sheldon's friends.
Who is Raj?
400
Leonard and Sheldon 's combined IQ equals this number.
What is 360?
500
This institution is the place that Sheldon, Leonard, Raj and Howard work at.
What is CalTech
500
The actress for (Leslie) who plays a former girlfriend of Leonard's, also played Johnny Galecki's girlfriend in "Roseanne". Laurie Metcalf, who plays Sheldon's mother, was also his co-star in Roseanne.
Who is Sara Gilbert?
500
Sheldon and Amy secretly experiment on the gang by spreading rumors to demonstrate this theory.
What is Meme Hypothesis?
500
Leonard cheats on this girlfriend with this woman from the Comic book shop.
Who is Priya? Who is Alice?
500
When the group are on a train to San Fransisco, Raj spots this famous actor on board.
Who is Summer Glau?
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