I know I've read this stuff before, but do you have a link? I'm curious to read a little more about this.
This has been discussed before on this forum here:
http://www.trekbbs.com/showthread.php?p=5136457
One additional example I can think of off the top of my head is the 1962 NAKED CITY episode "A Case Study of Two Savages" in which Rip Torn and Tuesday Weld go on a NATURAL BORN KILLERS-esque killing spree. At the end of the episode when the police ask Weld's character why they did it, she responds "I don't know. Just for the hell of it, I guess." But I've also seen others on various forums cite numerous examples dating back to the 1950's.
Thanks!