Quotes
Sheldon: Pleased to meet you, Dr. Gablehauser. How fortunate is it that the university has chosen to hire you, despite the fact that you've done no original research in 25 years and instead have written a series of popular books that reduce the great concept of science to a series of anecdotes, each one dumbed down to accommodate the duration of the average bowel movement. Mahalo.
Trivia
Sheldon's laptop has gone through several strange transformations throughout the series, but in this episode it takes the biscuit - it appears to be a Dell XPS with the back covered up, but the shot of Sheldon chatting only to Amy shows that it's apparently running MacOS X. See more...
Movie Mistakes blog
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Other great sites
The Big Bang Theory (2007) - 2 mistakes in "The Monopolar Expedition "
starring Jim Parsons, Johnny Galecki, Kaley Cuoco, Kunal Nayyar, Simon Helberg (add more)
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Updates: 
Series 2