Will Smith

In 2016, althugh not nominated for "Concussion," Will Smith vowed not to attend the Oscars in protest of a lack of diversity. For the second year in a row, all 20 acting nominees were white. Smith told "Good Morning America," "We’re part of this community. But at this current time, we’re uncomfortable to stand there and say, 'This is okay.'"

This wasn't Smith's first awards boycott: In 1989, he boycotted the Grammys when he learned that the announcement for best rap performance wouldn't be televised.