Kind of a cliche answer now, but at the time, everyone was shocked by Heath Ledger’s casting as Joker.

Kevin James as a violent Neo Nazi in ‘Becky’.

And he was actually really good in it!

Oh, I have a better one; Angela Lansbury in ‘The Manchurian Candidate’. As far as I know, the only time she has played a villain. And she was fantastic

I never would have expected John Malkovich to want to do the movie ‘Being John Malkovich’. It was such a crazy movie, and he is such a serious actor