Conversation so far:
When did Ray with Jamie Foxx come out?
Ray with Jamie Foxx came out in 2004
Was Unpredictable a movie with Jamie Foxx?
Unpredictable is Jamie Foxx's second studio album
What film did Jamie Foxx win an award for?
Jamie Foxx won an award for the film Ray

Question: What category did he win?
Self-contained rewrite: What category did Jamie Foxx win for the film Ray?