Quotes
Penny: Wow, Sheldon. I had no idea you made a board game.
Sheldon Cooper: Oh, Research Lab is more than just a board game. As it says in the box, "the physics is theoretical, but the fun is real."
Leonard Hofstadter: We must not be playing it right.
Trivia
Penny is the only character whose surname has not yet been revealed. See more...
Movie Mistakes blog
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Top 15 biggest Harry Potter film mistakes
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Other great sites
The Big Bang Theory (2007) - 3 mistakes in "The Fuzzy Boots Corollary"
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
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