Adding to the increasingly heavy Hollywood pile-on, Woody Allen has come out for Barack Obama.

And the award winning writer/director/actor of comedy classics such as Annie Hall and Manhattan, says it won’t be funny if Barack Obama fails to win the presidential seat.

"It would be a disgrace and a humiliation if Barack Obama does not win," Allen told journalists at the ongoing 56th San Sebastian film festival, where his latest film Vicky Cristina Barcelona is screening.

"It would be a very, very terrible thing for the United States in many, many ways. It would be a terrible thing if the American public was not moved to vote for him, that they actually preferred more of the same."

Obama, Allen said, is "so much better" than Republican rival John McCain, and "represents a huge step upward from (the) incompetence and misjudgment" of the Bush administration.