Some fans speculate that there was a real-life curse on the show. A high percentage of its cast ended up dying of cancer-related causes. Many also died young. Besides Elizabeth Montgomery, other major cast members to die at relatively young ages (under 65) include Alice Pearce (cancer), Paul Lynde (heart attack), Dick York (emphysema), and Dick Sargent (cancer). It’s hard to say whether this sad statistic can be attributed to “witchcraft” or to unhealthy lifestyle decisions.
In the episode in which Richard Dreyfuss appears, Rodney is older now and professes his love to Samantha, and turns himself into a dog in order to stay in her home. Darrin falls in love with the dog, and Sam is at her wit’s end trying to figure out a way to get rid of it! Dreyfuss is now, of course, a huge Hollywood star.
Elizabeth Montgomery grew tired of Bewitched and playing the same old character year after year. Allegedly, she was ready to throw in the towel after the fifth season. Show producers offered her so much money that she couldn’t walk away, but her performances in the last three seasons were noticeably lackluster.