Foxx was good in The Soloist, even if the movie was obvious Oscar bait. He won the Best Actor award for his Ray Charles impersonation, one of the few times in the past 15 years I've even kinda-sorta agreed with the Acadaemy's pick. His acceptance speech was great — [paraphrasing] "I got my first acting lessons from my grandmother, who told me to act like I had some sense."
I don't see how he could possibly make a Tarantino flick any worse.
"The trouble with being a ghost writer or artist is that you must remain anonymous without credit.
If one wants the credit, one has to cease being a ghost and become a leader or innovator." — Bob Kane