I got to the theater during the last preview so I missed Foxx as Ray Charles. That should be a nice measuring stick for him; how does Foxx as Ray Charles compare to Denzel as Malcom X or Will Smith as Ali (which Foxx himself was in).
I too noticed the Playmakers mural
, and I didn't even watch that show when it was airing on ESPN. I recognized the bald white guy from all those promos ESPN ran for the show.