Quotes
Sheldon: Coffee is out of the question. When I moved to California, I promised my mother that I wouldn't start doing drugs.
Trivia
After Sheldon mentions a molecular sieve, they go over to 4a, their apartment. 4a is a kind of molecular sieve. See more...
Movie Mistakes blog
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Other great sites
The Big Bang Theory (2007) - 3 mistakes in "The Grasshopper Experiment"
starring Jim Parsons, Johnny Galecki, Kaley Cuoco, Kunal Nayyar, Simon Helberg (add more)
Where is The Big Bang Theory ranked on the ultimate best to worst list? Cast your vote and find out!
Updates:
Series 2
Continuity: When Raj's parents tell him to put his laptop down and gather his friends, they all huddle around the one-seat sofa. Sheldon is crouched to the left of the seat with his hands on the sidearm, yet in shots angled at the left he has disappeared from his place (as to not obstruct these particular angled shots.)







