3. 'The Godfather: Part III'
Francis Ford Coppola was the single most acclaimed director of the 1970s, but his career totally fell apart in the 1980s after a series of disastrous bombs like One from the Heart and The Cotton Club. In 1990, he finally caved into years of pressure and made a third Godfather movie. Robert Duvall refused to come back and Winona Ryder dropped out of a key role just before filming began. In an historic error, he brought in his daughter Sofia to take over the part. She's become an amazing director in her own right, but at the time she was a teenager with no real acting experience. The movie isn't quite as bad as legend suggests, but it's incredibly unnecessary and can't even begin to compare to the first two, but then nothing really could. This was doomed to be a failure from the start.