Actors who were replaced Actors who were replaced, When Ashton Kutcher takes the lead role of "Two and a Half Men" tonight, replacing Charlie Sheen after his controversial ranting, he'll become the best-paid replacement actor in TV history. Find out how shows and movies deal with cast changes and why actors choose to leave shows midseason -- or are asked not to return. Shannen Doherty The show: "Charmed" The original actor: Shannen Doherty played Prue Halliwell, the eldest of three sisters who discover they have supernatural powers. The replacement: This actress's character was introduced as the long-lost Halliwell half-sister in the fourth season, while Doherty's character was killed off Mike Evans The show: "The Jeffersons" The original actor: Mike Evans originated the role of Lionel Jefferson on the hit show "All in the Family" and continued playing the level-headed son of George Jefferson in the spinoff "The Jeffersons....