'Dallas' photo courtesy of CBS.
Larry Hagman on 'Dallas'
The Bad: In the 1980s, if you wanted to make it known something was utterly sleazy and amoral, you'd just compare it to "Dallas" tycoon J.R. Ewing (Hangman). J.R. was so reviled that the "Who Shot J.R.?" cliffhanger set the precedent for current surprise-ending season finales -- probably because so many people wanted to shake the attempted assassin's hand.