Years from now, 'Raging Bull 2' (aka 'The Bronx Bull') will be the stuff of obscure trivia. The follow-up to Martin Scorcese’s Oscar-winning drama is part of a long-standing Hollywood tradition: the unwanted/unnecessary sequel. Here are some other examples that you might have forgotten about:

12. 'S. Darko: A Donnie Darko Tale' (2009)

Eight years after the cult classic baffled audiences, Daveigh Chase reprises her role as Donnie’s younger sister, Samantha. 'S. Darko' is one of those sequels that doesn’t have the blessing (or attachment) of the original film’s writer-director. But the creative team piles on plenty of prophecies, teen melodrama and pseudo-science to win over the hardcore 'Darko' disciples.