Hollywood types have a history of raw ambition, which should come as no surprise. After all, can anyone make it to the top of the showbiz heap without pissing off at least one person? These stars all had some of the most notorious celebrity feuds in showbiz history. Some resulted from misunderstandings, others from family or romantic rivalries, and still others from inflated ego. Go figure that those egos bruise easily, and can ignite heated, nasty feuds that drag on for years.