David Letterman

It's rumored that Cyrus and her father were estranged after members of the family appeared to take sides following Tish and Billy Ray's divorce.
During a 1989 roundtable discussion about comedy on "The Late Show," Keith Allen argued with the other guests until a producer jokingly told him to shut up because she didn't like his show. In response, he screamed, "HOW DARE YOU?" and called her names before storming off.