21, Dragonball, Prince of Persia, Avatar: The Last Airbender, Akira (not out yet), Stuck, A Mighty Heart, The Lone Ranger (somewhat debatable) are some I can think of off the top of my head and in this past decade but like I said it's been going on since at least the 40s.
Occasionally you see a minority character playing a role that was originally a white person or written as a white person (ie: Tara Thornton in the Sookie Stackhouse series is white, Nick Fury is white in the comics, etc) but you see far more white actors taking roles that are based on minorities either historically, in books, or in film.
Not to mention even many movies ABOUT minorities largely revolve around White protagonists and their point of view. The Help, Ghosts of Mississippi, Wind Talkers, Cry Freedom, A Time to Kill, etc.
This largely comes down to many whites in the US not wanting to see films with too many minorities. They think if the characters in the movie aren't white, they won't be able to relate to them. Yet unfortunately most minorities in this country are more than willing to see movies that have all white casts and do so time and time again. Which is why I wish more minorities would boycott those types of movies, or at least stop paying to see them.
edit: However should add I do think that Hollywood sells white American audiences short, and if there were more movies, with more minority characters with protagonist roles (and I'm not talking about the same recycled action/thriller roles where you see Will Smith, Samuel L. Jackson, Denzel Washington, etc over and over again) white audiences would be interested in seeing them. It would also be nice if Hollywood would green light movies with minority characters where the focus of the story doesn't have to center around race in some way (ie: Booty Call, Love & Basketball, The Woods, Baby Boy, etc)
