Tarantino was due to play the President of the USA in BRII but after the death of Kinji, had to cancel due to scheduling conflicts.
He's always given credit where credit is due.
In fact, without Jackie Brown, I doubt I would've discovered Coffy, Foxy Brown, Truck Turner, Slaughter or my favourite - Black Mama White Mama.
For example, when Grindhouse came out, loads of new Grindhouse discs were released
Tarantino has opened the eyes of many to other movies