In response to some of these (and I think enough time has passed not to need spoiler tags):
John Amos left
Good Times to do the mini-series
Roots; he was on the outs with Norman Lear after he gave a scathing interview to "Ebony" magazine where he basically trashed the J.J. character as a bad role model for blacks. Esther Rolle gave a similar interview to another magazine, left in 1977 with Florida's remarriage and moving somewhere where her new husband Carl, who had lung cancer, would feel better, and came back in 1978, minus the husband or any evidence he existed (her idea). Maybe he died and she didn't want to talk about it?
McLean Stevenson had FOUR shows while
M*A*S*H was still running, all of them bombs:
—The McLean Stevenson Show (1975-1976, NBC)
—In The Beginning (1978, CBS)
—Hello, Larry (1979-1980, NBC)
—Condo (1983, ABC)
It's almost like his agent was booking the worst shows they offered him on purpose to send a message. That is, if they offered him any good ones to begin with.
Also:
—In 1969, everyone noticed the "new" Darren on
Bewitched, but Dick York had to leave for his health; he suffered a severe back injury in a car accident in 1959 and became unable to perform the demanding physical stunts.
—Had there been a 6th season of
The Brady Bunch, it would have been sans Robert Reed. Sherwood Schwartz got tired of his prima donna attitude regarding the scripts (and the way he approached the serious script problems in what ended up being the show's finale, not saying anything until the day before shooting began, sealed the deal).
—ABC successfully persuaded Nancy Walker to quit
Rhoda for her own show,
The Nancy Walker Show, in 1976. It flopped, and so did the next show they gave her,
Blansky's Beauties. She was back on
Rhoda in the fall of 1977.
—
Sanford and Son was only cancelled because
Redd Foxx had been offered a variety show on ABC that paid more than NBC and Norman Lear would put up. Demond Wilson was also offered a CBS sitcom,
Baby I'm Back. Both flopped.
—Susan St. James left
McMillan and Wife in 1976, so they renamed its final season
McMillan.
—Louise Lasser left
Mary Hartman, Mary Hartman in 1977. Without her, they renamed its final season
Forever Fernwood.
—John Travolta left
Welcome Back, Kotter in 1978 for a movie career that started out successfully, became stagnant in the 1980s, and picked up again in the 1990s. The show he left failed to recover, and his replacement, Stephen Strawbridge, was as un-Sweathoglike as they got. Meanwhile, Gabe Kaplan also got fed up with producer James Komack and left with two more episodes left to shoot in 1979.
—Fred Berry, Rerun on
What's Happening!!, went on strike in 1979 for a salary increase, and convinced Ernest Thomas and Haywood Nelson to join him (Mabel King already quit in 1978 because she wanted Raj and Dee to have a mother and a father; her character of Mrs. Thomas was a divorcée). Despite the show's good ratings, ABC had 17 of the top 30 shows that season, and it was the 17th of those (tying at 28th with Monday Night Football), so they deemed it expendable and cancelled it. Seven years later, when the cast was reunited in syndication on
What's Happening Now!!, Fred Berry once again demanded a salary increase, and left when the producers refused to meet it.
—Diana Canova left
Soap in 1980 for her own unrelated series,
I'm A Big Girl Now, which co-starred Danny Thomas. Both her old and new shows were gone next year.
—Suzanne Somers believed she was the reason for the success of
Three's Company and demanded part ownership in the show and $100,000 per episode, more than the producers could afford. So she was out.
—A year after Larry Hagman's successful 1980
Dallas contract renegotiation made him a rich man, Don Murray believed he could do the same for himself on
Knots Landing. He failed, and his character of Sid Fairgate paid the ultimate price.
—Cindy Williams, who always felt mistreated and unappreciated on set, left
Laverne & Shirley in 1982 while pregnant. The name stayed, but the viewers didn't.
—After little more than a year trying to fit into an already established show, Dixie Carter left Diff'rent Strokes because she didn't get along with Gary Coleman, whose health and patience with the way his character was being written were wearing thin; Mary Ann Mobley replaced her in the show's final season, which Coleman had to be paid quite a pretty penny to be persuaded to do. Ironically, the second housekeeper, Nedra Volz, left this show in 1982 for a role on CBS's short-lived Filthy Rich, which Carter also starred in.
—Patrick Duffy left Dallas in 1985, leading to Bobby Ewing's death. The stories' direction in the season that followed so upset Larry Hagman that he persuaded Duffy to return. He did it, but how did they erase a year's worth of story? By making it Pam's dream the night she agreed to remarry Bobby. The show never lived that one down, and when Victoria Principal left in 1987, they refused to kill her off (in spite of the way her character was written off) in case she changed her mind. It never happened, and a revolving door of veterans and newcomers passed through the show's declining years. Meanwhile, the spin-off Knots Landing, whose writers were not consulted about the least worst way to bring back Bobby, refused to push the reset button on its season that coincided with Dallas's now-legendary "dream season", so they basically split their continuities at that point. Bobby was alive in Dallas and dead in Knots Landing.
—Meanwhile, Dynasty saw Al Corley leave when they tried (at ABC's insistence) to tone down Steven's homosexuality, leading to his oil rig explosion, plastic surgery, and recast in the person of Jack Coleman.
—Charlotte Rae left
The Facts of Life in 1986 because she believed the girls had grown up enough not to need Mrs. Garrett. The writers must have felt so, too; this was reflected in the dearth of air time she received in her last season.
—Shelley Long quit
Cheers, where no one on the set got along with her, for a movie career. That movie career didn't even outlast the show.
—Delta Burke quit
Designing Women in 1991 after a very public row (and a string of negative publicity) when the producers tried to get her to lose weight, but she couldn't. Jean Smart went with her. They tried adding Julia Duffy and Jan Hooks as Suzanne and Charlene's respective cousins, but it wasn't the same. Ironically, the 1991-1992 season had the show's highest Nielsen rating ever. Burke mended fences long enough to do a short-lived 1995 spin-off,
Women of the House. What was not known at the time (or at least not reported in the tabloids) was that she suffered from severe depression.
—In 1999, Maggie Roswell refused to continue to commute from her home in Denver to LA to record her voices for
The Simpsons without a salary increase. Fox refused her, so her most famous character, Maude Flanders, died in a freak accident, yet she has returned infrequently over the past few years to do her other characters.
As for spin-offs:
—Marla Gibbs had a short-lived
Jeffersons spin-off called
Checking In in 1981. It ran a month, and she got a smooth transition back onto the old show.
—Audra Lindley and Norman Fell weren't so lucky. ABC used the fact that
The Ropers, their
Three's Company spin-off, technically had 2 seasons, not to bring them back when it flopped.
—Polly Holliday was also denied re-entry to
Alice when her spin-off,
Flo, flopped, as it technically had 2 seasons as well.
—Lisa Bonet was spun-off from
The Cosby Show to
A Different World in 1987, but she got pregnant, and there was no way to write around it, so they had her drop out of Hillman College and return to the parent show in 1989. She left for good after two more years.
Edited by MatthewA - 8/28/09 at 5:59pm