Karate chop or not, what's amazing is how many concussions in general our old-time heroes suffered. Rockford, Mannix, James West...all got conked weekly in what today would have required a month-long concussion protocol! Even our favorite cop Columbo got kicked in the face big-time in "Undercover."

Perhaps the all-time record probably belongs to Peter Gunn. I think he averaged more than one knock-out per 30 minute episode.

Don't you folks watch pro wrestling? Referees are the most fragile people on the planet. Fart in their general direction and they're unconscious.