Live lasers were used by Rob Legato to "connect" Barclay to the holodeck.
	In an original draft, the aliens were malevolent and were going to hold Barclay hostage. In a last minute rewrite which was sent down the day of shooting, the plot was changed.
	Michael Piller claims Rick Berman was the one who thought up the Cyrano de Bergerac scene between Barclay and Crusher.
	Gates McFadden's pleas to give her character more comedy and hobbies were finally met in this episode.
	The shuttlecraft Geordi and Barclay use is the Feynman after 1965 Nobel laureate physicist Richard Fenyman.
	First mention of the term ODN (Optical Data Network), which according to producers describes the "ship's multiplex data transmission system".

If you have some more behind the scenes information, send it in.