John de Lancie's favorite appearance as Q. He reportedly said he had legitimate fun on set. It was also his last appearance before the release of Taking Care of Business (1990) where he appeared with Next Generation co-star Gates McFadden (Dr. Beverly Crusher}.
And if you're wrong the moon will crumble due to subspace compression. Don't say I didn't warn you.
Lt. Commander Geordi La Forge: Shut up, Q.
Q: I will not be spoken to in this manner!
Lt. Commander Geordi La Forge: Data.
Lt. Cmdr. Data: Q, I strongly suggest that you cooperate.
At 11:29 run time a small piece of rubber or plastic falls off the door as Picard walks into the brig, it even bounces off his left leg before falling to the floor, it remains to be seen under the bottom of the door even after the doors are closed.