In the scene where Geordi and the Captain are in engineering trying to close the subspace hole, you can see a silhouette of the camera in the reflection of the warp core blue lights in the window between the warp core and the console they are working from. See more...
Near the end of the episode, Picard and Crusher walk out of the cargo bay. As the doors close behind them, you can see Tasha Yar waving to the camera from inside the bay. Her character is killed in the next episode, but this one was filmed second. The actress was waving goodbye to all of her fans. See more...
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The entry you are changing the wording of is:
|Title||Star Trek: The Next Generation|
|Original entry||Just before encountering the Lysian destroyer the boom is visible in the top left of the screen very briefly|