Only recently do the Gosselins seem to have declared detente -- relatively, anyway. After the couple, made famous (and then infamous) by TLC's "Jon & Kate Plus 8," split up in 2009, she cried about the mess their family had become, and he accused her of exploiting their kids. When she signed on to "Dancing With the Stars," his lawyer called Kate "an absentee mom;" her lawyer shot back, "he's out of the limelight, while 23 million people are watching Kate on 'Dancing with the Stars.'"
Kate Gosselin's since moved on to new shows: "Kate Plus 8" and "Twist of Kate." Jon Gosselin, meanwhile, has held back from bashing her directly, instead insinuating that he could dance circles around her if he were to compete on "DWTS."
2. Charlie Sheen vs. Denise Richards
Charlie Sheen and Denise Richards' years-long back-and-forth made their divorce the subject of countless tabloid headlines, but the faux pas that took the cake came in June 2008, when Richards released a three-year-old, expletive-laced voice message from Sheen. The highlight: a curse-filled rant from Sheen calling his ex-wife -- and the mother of their two daughters Sam, 5, and Lola, 4 -- a "f**king c**t" and a "f**king n****r." Sheen, star of "Two and a Half Men," followed up by releasing an apology for what he called his "choice of words."
3. Christie Brinkley vs. Peter Cook
It's bad enough finding out about a husband's affair. Having to hear all the gory details divulged in court -- that can be nauseating, especially in the case of Christie Brinkley and Peter Cook. Their July 2008 divorce proceedings featured a torrent of torrid tales, including Cook's tearful admission that he enjoyed oral sex with his then-18-year-old assistant Diana Bianchi and his fondness for masturbating via webcam. No wonder Brinkley told Ladies' Home Journal "I would never get married again" in July 2009. "With what I know, I don't see why anyone would get married," she added.
4. Dina Lohan vs. Michael Lohan
For a while, it seemed the bulk of Dina and Michael Lohan's bickering concerned the fate of their most famous daughter, Lindsay, which might be expected from divorced parents new to Hollywood. But in July 2008 (apparently the summer of '08 slayed celebrity couples), a wild card entered the game: Michael Lohan learned of a love child he never new existed, a teenage half-sister of Lindsay and her three siblings that he fathered while separated from Dina. He even took a DNA test to confirm he was the girl's dad. Dina's response? She told Hollyscoop.com "I feel bad for the little girl."
5. Madonna vs. Guy Ritchie
After trying to cover up their divorce for weeks, once Madonna and Guy Ritchie went public with the news in October 2008, the mud-slinging started in earnest. She took a swipe at him at a sold-out concert in Boston, introducing the song "Miles Away, " which was inspired by her relationship with Ritchie, by quipping, "This song is for the emotionally retarded. Maybe you know some people who fall into that category. God knows I do." Ritchie fought back via an interview with Esquire magazine, calling Madonna "retarded" while admitting he still loves her.
6. Heather Mills vs. Paul McCartney