Ok, I'll repost what I said in the Anything Goes thread, but will black it out in case someone doesn't want to know...
[blackout]About Panther's accent:
There's a show i saw on HBO - Number 1 Ladies Detective Agency, which features characters from Botswana.
To me, Panther sounded like them.
Now, keep in mind, my ears are untrained. I haven't heard enough African accents for any significant amount of time to even make an educated guess on the actual influences of T'Challa's accent. Let's just say it's decidedly African and that Chadwick did a great job.[/blackout]