Penny: What the hell is that?
Leonard: What was it doing on the ceiling?
Wolowitz: That's classified.
Near the end of the show, the big robot is chasing the other robot down the hallway. The camera starts to zoom in as the robots come by it. The big robot stops just before the camera zoom is past it, yet they keep running down the hallway like the robot is still going. See more...
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...
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The entry you are marking as a duplicate is:
|Title||The Big Bang Theory|
|Original entry||When Penny sits in Sheldon's seat, the cushion on the other side of the couch rotates itself; evident by the buttons sewn on it.|