Balance of Terror - one of my favorites. i think it ties into also watching  lot of ww2 movies at the same age, specifically one about the cat-and-mouse played between a destroyer and a submarine, the name of which escapes me. 
Catspaw - CAAAAAPTAAAAIIIN KIIRRRRRRKKKK, YOUUUU SHAAAALLLLL DIIIEEEE, the crystal box, the cat, the pathetic remnants of the antagonists' true forms...
	
		
			
		
		
	
				
			Catspaw - CAAAAAPTAAAAIIIN KIIRRRRRRKKKK, YOUUUU SHAAAALLLLL DIIIEEEE, the crystal box, the cat, the pathetic remnants of the antagonists' true forms...
				
)

 I didn't even recognize him.